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Cell vs. virus: A battle for health - Shannon Stiles

Video vocabulary

and

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US / ənd /

UK / ənd, ən,ænd /

A1
  • conjunction
  • Used to refer to two or more things
  • Plus; in addition; on top of that
  • Used to introduce an action that follows another

back

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US / bæk /

UK / bæk /

A1
  • adjecitve
  • Farthest from the front e.g. in a classroom
  • adverb
  • Have returned to a place you were before
  • noun
  • The part of a chair that the upper body leans upon
  • Location at the rear of something
  • The reverse of side something
  • Area on the rear of your body
  • verb
  • To bet money on something
  • To go backwards in a car
  • To support and encourage someone or some cause

invader

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US / ɪnˈveɪdə(r) /

UK / ɪnˈvedɚ /

B1
  • noun
  • Someone who enters to cause harm

lot

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US / lɒt /

UK / lɑt /

A1
  • noun
  • What happens to a person in life from chance; fate
  • A group of people seen together
  • Item for sale at an auction
  • Small area of land used for a purpose e.g. parking

sugar

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US / ˈʃʊgə(r) /

UK / ˈʃʊɡɚ /

A2
  • noun
  • Substance which the body stores or uses for energy
  • Amount of sugar contained in a small spoon
  • Used to address someone you like or love
  • White sweet substance used to make foods sweeter
  • verb
  • To add, put on, or mix a food or drink with sugar

along

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US / əˈlɒŋ /

UK / əˈlɔ:ŋ /

A1
  • adverb
  • As a companion; taken with someone
  • preposition
  • At a point on a line

form

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US / fɔ:m /

UK / fɔrm /

A1
  • noun
  • Sports team or person's current winning record
  • Document you complete when making an application
  • Visible shape or style; type; kind
  • verb
  • To organize something such as a club or group
  • To develop; to come into a shape or substance
  • To make something into a particular shape

from

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US / frəm /

UK / frʌm, frɑm,frəm /

A1
  • preposition
  • Starting at a particular place, time or level

invade

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US / ɪnˈveɪd /

UK / ɪnˈved /

B1
  • verb
  • To enter something causing a harmful result

out

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US / aʊt /

UK / aʊt /

A1
  • adverb
  • No longer stylish (e.g. fashion)
  • Away from home, business, or the usual place
  • In a direction/movement away from inside or center
  • noun
  • Act when a batter cannot continue playing
  • verb
  • To tell people a secret

over

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US / 'əʊvə(r) /

UK / ˈovɚ /

A1
  • adverb
  • Finished; no longer happening
  • Towards the ground/away from a standing position
  • noun
  • A set of six consecutive balls bowled in cricket
  • other
  • Finished
  • preposition
  • Showing the relation when a thing is above another
  • On or covering something
  • Above or across something
  • More than you need
  • From one side to the other
  • In the direction of; toward

arrive

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US / əˈraɪv /

UK / əˈraɪv /

A1
  • verb
  • To reach the place you are traveling to

help

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US / help /

UK / hɛlp /

A1
  • noun
  • Something given to enable a person to do something
  • Assistance given to someone in need
  • Someone who makes something easier or possible
  • verb
  • To act to enable a person to do something; assist
  • To make something better or less difficult

layer

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US / ˈleiə /

UK / ˈleɚ /

B1
  • noun
  • One of several sheets of a material or object
  • verb
  • To put things one on top of another

pretend

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US / prɪ'tend /

UK / prɪˈtɛnd /

A2
  • verb
  • To act as if something is true when it is not

think

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US / θɪŋk /

UK / θɪŋk /

A1
  • verb
  • To have an idea about something without certainty
  • To have an idea, opinion or belief about something

smoothly

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US / ˈsmu:ðli /

UK / smuðlɪ /

A2
  • adverb
  • In an evenly flowing manner or movement
  • In an easy manner, with no problems

electron

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US / ɪˈlektrɒn /

UK / ɪˈlektrɑ:n /

B2
  • noun
  • A negatively charged particle

only

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US / ˈəunli /

UK / ˈonli /

A1
  • adverb
  • Just one; just that amount or thing; not more than
  • Not very important or serious
  • Just that type of thing, person
  • Short time ago; not before a certain time
  • conjunction
  • Except; but

call

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US / kɔ:l /

UK / kɔl /

A1
  • noun
  • A order or request for action
  • The sound an animal makes, often when in danger
  • A correct prediction, e.g. a decision in a game
  • A short visit to a place or person
  • A decision by a referee or umpire in a game
  • verb
  • To make a request or order for action
  • (Animal) to make sounds to warn of danger
  • To announce the date of an election
  • To make a judgment about something
  • To give someone or something a name
  • To guess in advance the result or outcome
  • To visit a place or person for a short time
  • To phone someone
  • To speak, announce or shout in a loud voice

leave

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US / li:v /

UK / liv /

A1
  • noun
  • Permission to do something
  • Vacation time; time off work
  • verb
  • To go away from; depart
  • To gift property to someone after you die
  • To allow something to continue happening
  • To let something remain unused or available
  • To let something or someone remain somewhere

nucleus

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US / ˈnju:kliəs /

UK / ˈnu:kliəs /

B2
  • noun
  • Center of an atom
  • Control center of a cell
  • Most important part of something larger

where

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US / hwɛə /

UK / hwɛr, wɛr /

A1
  • conjunction
  • At or in the place which
  • In whatever place
  • pronoun
  • Word you use to ask the location of something

endoplasmic

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US / ˌendə'plazmɪk /

UK / ˌendə'plazmɪk /

C2
  • adjecitve
  • Inner portion of the cytoplasm of a cell

keep

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US / ki:p /

UK / kip /

A1
  • noun
  • Large, strong tower in the middle of a castle
  • Money spent on you so you can live in a place
  • verb
  • To continue doing something; not to stop
  • To stop balls going in a goal in sports
  • To not give back or return something
  • (Of food) to not spoil or not rot
  • To take possession of something to own, e.g. a pet
  • To have and continue to hold something
  • To do something that you have promised or agreed
  • To stay in a certain place or condition
  • To maintain the rules

antibody

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US / ˈæntibɒdi /

UK / ˈæntibɑ:di /

B1
  • noun
  • Substance produced by the body to fight disease

enzyme

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US / ˈenzaɪm /

UK / ˈɛnzaɪm /

B2
  • noun
  • A protein made by cells

also

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US / 'ɔ:lsəʊ /

UK / ˈɔlso /

A1
  • adverb
  • In addition; too; in a similar way

how

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US / haʊ /

UK / haʊ /

A1
  • adjecitve
  • To what degree? in what amount?
  • adverb
  • (Used to explain the way to do something)
  • exclamation
  • For what purpose or reason?
  • (Used to ask someone or something's condition)

live

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US / lɪv /

UK / liv /

A1
  • adjecitve
  • Being broadcast as events happen, not recorded
  • Carrying electric current; able to give a shock
  • Glowing because burning; hot
  • Not yet killed (for food)
  • adverb
  • (Music, drama) as it is performed
  • verb
  • To be alive
  • To experience a particular type of life
  • To make your home in a house or town

you

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US / jʊ /

UK / ju /

A1
  • pronoun
  • Person someone is speaking or writing to
  • Person or people in general

giant

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US / 'dʒaɪənt /

UK / ˈdʒaɪənt /

A2
  • adjecitve
  • Very large, or much bigger than other things
  • noun
  • Tall, large, and powerful human-like creatures
  • Very successful, powerful person or organization

let

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US / let /

UK / lɛt /

A1
  • verb
  • To allow someone to do something
  • Introducing a suggestion to do something together
  • To rent a house, etc. to others

material

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US / məˈtɪəriəl /

UK / məˈtɪriəl /

A2
  • adjecitve
  • Relevant; (of evidence) important or significant
  • Belonging to the world of physical things
  • noun
  • Cloth; fabric
  • Supplies or data needed to do a certain thing
  • Substance from which a thing is made of

the

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US / ðə /

UK / ðə /

A1
  • article
  • Used to refer to something already mentioned
  • Used to show there is only one of something
  • determiner
  • Used to describe all of a family

wall

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US / wɔ:l /

UK / wɔl /

A1
  • noun
  • High, flat side of a room or building

this

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US / ðɪs /

UK / ðɪs /

A1
  • adjecitve
  • Used to indicate something already been discussed
  • Used to indicate something happening around now
  • adverb
  • An indication by a physical motion or gesture
  • A specific amount of
  • determiner
  • Person, thing, or idea near you
  • pronoun
  • Person, thing that has already been discussed

body

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US / ˈbɒd.i /

UK / ˈbɑdi /

A1
  • noun
  • An object distinct from other objects
  • A group of people involved in an activity together
  • Main part of something
  • A person's physical self

inner

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US / ˈɪnə(r) /

UK / ˈɪnɚ /

A1
  • adjecitve
  • Concerning the inside part of something

make

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US / meɪk /

UK / mek /

A1
  • noun
  • Product made by a particular company; brand
  • verb
  • To arrange or prepare something e.g. dinner
  • To get to (a place) on time
  • To gain the status of (teacher, lawyer, etc.)
  • To create something by putting things together
  • To earn a certain amount of money at a job
  • To cause or force a person to do something
  • To cause something to happen or be formed

order

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US / 'ɔ:də(r) /

UK / ˈɔrdɚ /

A1
  • noun
  • Religious or social group, as of nuns
  • Instructions to others to do what you want
  • State in which things are neat and organized
  • What you ask to buy, e.g. food in restaurant
  • Social or political control of an area
  • verb
  • To put things in a sequence, e.g. a, b, c
  • To give instructions to others to do what you want
  • To ask for something you want to buy, e.g. a meal

outside

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US / ˌaʊtˈsaɪd /

UK / aʊtˈsaɪd, ˈaʊtˌsaɪd /

A2
  • adverb
  • Beyond the limits or edges of some place, thing
  • noun
  • Area around or near something, such as a building
  • preposition
  • Beyond the limits or edges of some place, thing

rigid

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US / ˈrɪdʒɪd /

UK / ˈrɪdʒɪd /

B1
  • adjecitve
  • Stiff rather than flexible
  • Very fixed in your opinion or habits

run

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US / rʌn /

UK / rʌn /

A1
  • noun
  • Journey between two places made by ship or car
  • Series of similar things or successes and failures
  • Act of running; exercise of running
  • verb
  • To depart or travel according to a schedule
  • To cause an animal to move in a certain direction
  • (Of an engine) to be operating
  • To start or use a computer program
  • To flow in a certain direction, like a liquid
  • To manage or operate a business
  • To operate or drive something
  • (Of a road) to go from one place to another
  • To move your legs faster than walking

chemical

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US / ˈkemɪkl /

UK / ˈkɛmɪkəl /

A2
  • adjecitve
  • Made of various elements
  • noun
  • Basic substance produced by mixing elements

fuse

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US / fju:z /

UK / fjuz /

B2
  • noun
  • Device connected to and making a bomb explode
  • Electrical safety device
  • verb
  • (Metal) to become one through heat contact

instruction

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US / ɪn'strʌkʃn /

UK / ɪnˈstrʌkʃən /

A2
  • noun
  • A command for someone formally to do something
  • Act of teaching or explaining to others
  • Information about how to do or use something

plant

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US / plɑ:nt /

UK / plænt /

A2
  • noun
  • Factory or a place where things are made
  • Living thing with leaves and roots growing in soil
  • verb
  • To firmly position something (in the ground)
  • To put seeds, flowers, trees in the ground

eject

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US / ɪ'dʒekt /

UK / ɪ'dʒekt /

B2
  • verb
  • To make a disc or tape come out of a machine
  • To throw someone out; force someone to leave

into

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US / 'ɪntə /

UK / ˈɪntu /

A1
  • preposition
  • Moving or going inside something
  • In the same direction as; in the direction of
  • So as to become; taking the state of

one

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US / wʌn /

UK / wʌn /

A1
  • pronoun
  • You; we; people in general; someone
  • The thing or person previously referred to
  • adjecitve
  • Used to refer to people generally
  • Being a strong example of (something mentioned)
  • number
  • Number 1

other

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US / 'ʌðə(r) /

UK / ˈʌðər /

A1
  • adjecitve
  • A thing different from that mentioned
  • determiner
  • (Something) else; not the first (one)
  • pronoun
  • Being the one and only thing of that category

ribosome

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US / 'raɪbəsəʊm /

UK / 'raɪbəsoʊm /

A1
  • noun
  • Organelle in the cytoplasm of a living cell; they attach to mRNand move down it one codon at a time

power

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US / 'paʊə(r) /

UK / ˈpaʊɚ /

A1
  • noun
  • Legal or official right to perform certain actions
  • Ability to move forcefully and quickly
  • Energy of something (e.g. electricity or fuel)
  • Mathematical way to multiply a number
  • Condition of being in political control
  • Physical force, energy, and strength
  • verb
  • To give energy to something, e.g. by electricity
  • To move something forcefully and quickly

cold

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US / kəʊld /

UK / kold /

A1
  • adjecitve
  • Having a very low temperature
  • Being unfriendly or lacking emotion
  • noun
  • Illness of sneezing, coughing, and a sore throat

bubble

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US / ˈbʌbl /

UK / ˈbʌbəl /

B1
  • noun
  • A small ball of air inside of a liquid
  • verb
  • (Of a liquid) to produce bubbles, as when boiling
  • To show intense emotion, e.g. excitement, anger

earth

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US / ɜ:θ /

UK / ɚθ /

A1
  • noun
  • Wire connecting an electrical device to the ground
  • The planet we live on
  • Soil in which we grow plants

for

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US / fə(r) /

UK / fɔr,fə /

A1
  • preposition
  • Used to show the purpose, or need of something

through

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US / θru: /

UK / θru /

A2
  • adjecitve
  • having finished using or doing something
  • adverb
  • From the beginning of something until the end
  • preposition
  • Over, in, across an entire thing or place
  • Allowing you to pass between, or to
  • By a particular way or process; by the use of

kill

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US / kɪl /

UK / kɪl /

A1
  • noun
  • Animal killed by a person or other animal
  • verb
  • To cause someone to experience a lot of pain
  • To end the life of a person or other living thing
  • To be very funny
  • To prevent something from continuing or operating
  • To do something unimportant to pass time quickly

semipermeable

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US / 'semɪ'pɜ:mɪəbl /

UK / ˌsemɪ'pɜ:mɪrbəl /

A1
  • adjecitve
  • (Of a membrane) Selectively permeable

water

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US / 'wɔ:tə(r) /

UK / ˈwɔtɚ, ˈwɑtɚ /

A1
  • noun
  • Clear liquid that forms the seas, rivers and rain
  • Large area such as an ocean or sea
  • verb
  • (Of the eyes) to produce tears
  • (Mouth) to become wet at the thought of nice food
  • To pour liquids onto a plant to keep it alive

land

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US / lænd /

UK / lænd /

A1
  • noun
  • Region or country
  • Earth; the ground
  • verb
  • To arrive or cause a boat to arrive at the shore
  • To obtain or get something that you wanted
  • To (cause to) come down to the ground safely
  • To cause to arrive in a specific place or state

piece

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US / pi:s /

UK / pis /

A1
  • noun
  • A counter in a board game
  • Small part of something larger
  • verb
  • To put items together to assemble something

start

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US / stɑ:t /

UK / stɑrt /

A1
  • noun
  • First time or place that a thing exists; beginning
  • First opportunity to achieve something, e.g. a job
  • Sudden action or movement because you are scared
  • other
  • Beginning of something in place or time
  • verb
  • To do, be or happen for the first time; begin
  • To turn something on

light

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US / laɪt /

UK / laɪt /

A1
  • adjecitve
  • Being bright making it easy to see; not dark
  • Being pale and lacking darkness of color
  • Not heavy; weighing only a little
  • adverb
  • Carrying few bags when traveling
  • noun
  • A source of energy that makes a room or area bright
  • Way in which something or someone is understood
  • verb
  • To cause something to burn; put a burning match to
  • To provide a way to see ahead

molecule

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US / ˈmɒlɪkju:l /

UK / ˈmɑlɪˌkjul /

B2
  • noun
  • Two or more atoms chemically combined

nutrient

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US / ˈnju:triənt /

UK / ˈnutriənt /

B1
  • noun
  • A chemical living things needs to be healthy

rna

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US / ˌɑːr en ˈeɪ /

UK / ˌɑːr en ˈeɪ /

A1
  • noun
  • Long linear polymer of nucleotides that transmit genetic information from DNto cytoplasm

head

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US / hed /

UK / hɛd /

A1
  • noun
  • Counter for the number of cattle
  • Natural mental ability or intelligence
  • Leader or person with the greatest authority
  • Mind; mental ability; mental state
  • Side of a coin with a head on it
  • Top part of your body with eyes and a mouth
  • Starting point of something, e.g. a river
  • verb
  • To hit a ball with your head in a game
  • To be first or at the front or top (e.g. a list)
  • To travel or move toward a particular place; To go in a particular direction
  • To become the leader of something
  • To lead or be responsible for something

special

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US / 'speʃl /

UK / ˈspɛʃəl /

A1
  • adjecitve
  • Being additional or extra
  • Different, better or greater than normal
  • noun
  • Heavily discounted sales item

send

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US / send /

UK / sɛnd /

A1
  • verb
  • To cause to behave or respond in a particular way
  • To cause mail or packages to go to another place
  • To move something quickly in a particular way
  • To give information or greetings to someone

animal

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US / ˈænɪml /

UK / ˈænəməl /

A1
  • noun
  • A living creature that is not a plant or person

line

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US / laɪn /

UK / laɪn /

A1
  • noun
  • Border that divides two places or regions
  • Long crease in the skin, often from age
  • Mark that is long, straight and very thin
  • Row of words, letters or numbers that are written
  • Telephone connection
  • People waiting one behind the other; queue
  • Long thin wire, e.g. for electrical signal
  • verb
  • To put material along the inside of something

friend

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US / frend /

UK / frɛnd /

A1
  • noun
  • Person who you like and enjoy being with

protein

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US / ˈprəʊti:n /

UK / ˈprəʊˌtiːn /

B1
  • noun
  • Group of molecules made from amino acids

structure

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US / ˈstrʌk.tʃə /

UK / ˈstrʌk.tʃɚ /

A2
  • noun
  • The way in which the parts of a system or object are arranged or organized, or a system arranged in
  • verb
  • To plan, organize, or arrange the parts of something

attach

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US / ə'tætʃ /

UK / əˈtætʃ /

A2
  • verb
  • To be associated or connected with

apparatus

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US / ˌæpə'reɪtəs /

UK / ˌæpəˈretəs, -ˈrætəs /

B1
  • noun
  • Tools or instruments used for a specific activity

carry

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US / ˈkæri /

UK / ˈkæri /

A1
  • verb
  • To have a child, be pregnant
  • To have a disease you might give to others
  • (Of stores) to sell a particular product
  • To hold something and move it to another place
  • To travel a long distance (sound)
  • To support the weight or burden of something

pack

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US / pæk /

UK / pæk /

A1
  • noun
  • Bag carried on the back of donkey, etc.
  • Group of people, animals, or objects
  • verb
  • To put things in a suitcase to go on a trip
  • To crowd a place with a large amount of things
  • To put something into a container to store it

same

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US / seɪm /

UK / sem /

A1
  • adjecitve
  • Being equal in quality and amount
  • Identical; not different
  • Not changing; constant

sneeze

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US / sni:z /

UK / sniz /

B1
  • noun
  • Act of air suddenly being forced out of nose/mouth
  • verb
  • To suddenly force air out of nose/mouth

tiny

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US / 'taɪnɪ /

UK / ˈtaɪni /

A2
  • adjecitve
  • Very, very small

reticulum

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US / rɪ'tɪkjʊləm /

UK / rɪ'tɪkjələm /

A1
  • noun
  • Small constellation in the southern hemisphere near Dorado and Hydrus

food

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US / fu:d /

UK / fud /

A1
  • noun
  • What people and animals eat to live
  • Things taken in by plants to maintain life
  • A particular style or type of cooking, e.g. Asian

our

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US / 'aʊə(r) /

UK / aʊr /

A1
  • determiner
  • Belonging to us

whole

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US / həul /

UK / hol /

A1
  • adjecitve
  • Complete or full; all of
  • Being in a good condition
  • noun
  • Complete amount or sum; total

but

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US / bət /

UK / bʌt,bət /

A1
  • conjunction
  • Used before you say something different, opposite

give

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US / ɡɪv /

UK / ɡɪv /

A1
  • noun
  • Degree of flexibility in something, a material
  • verb
  • To hand over or present something to someone
  • To cause someone to have or experience something

chop

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US / tʃɒp /

UK / tʃɑp /

B1
  • noun
  • A hit with the hand in a sideways motion
  • Thick slice of meat still attached to a bone
  • verb
  • To cut into pieces with an up and down motion
  • To hit someone with your hand

mitochondrion

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US / ˌmaɪtəʊˈkɒndriən /

UK / ˌmaɪtoʊˈkɑːndriən /

A1
  • noun
  • Organelle containing enzymes responsible for producing energy

blue

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US / blu: /

UK / blu /

A1
  • adjecitve
  • Color of the clear sky
  • Feeling sad or down

membrane

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US / 'membreɪn /

UK / ˈmɛmˌbren /

B2
  • noun
  • Outside covering of a cell
  • A thin covering of tissue or of a cell

breathe

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US / bri:ð /

UK / brið /

A2
  • verb
  • To move air into and out of your lungs
  • To say something very softly
  • To stop moving so one can rest

can

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US / kæn /

UK / kən,kæn /

A1
  • noun
  • A metal container for storing food
  • other
  • Able to; have the skill to; have the time to
  • verb
  • To have permission to
  • To be possible to do
  • To preserve food by sealing it in a metal container

copy

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US / ˈkɒpi /

UK / ˈkɑ:pi /

A1
  • noun
  • A counter for items that are the same
  • Fake product pretending to be an original
  • An imitation of an original
  • A duplicate of a paper printed in a photocopier
  • Written text for printing, use in ads, etc.
  • verb
  • To make something look the same as the original
  • To act in the exact same way as someone else
  • To read and then write down what you read

certain

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US / ˈsə:tn /

UK / ˈsɚtn /

A1
  • adjecitve
  • Definite, fixed
  • Referring to an unspecified amount or quantity
  • Being sure about something; without doubt

combine

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US / kəmˈbaɪn /

UK / kəmˈbaɪn /

A2
  • verb
  • To mix several things together to form one thing

stud

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US / stʌd /

UK / stʌd /

C2
  • adjecitve
  • (An animal, esp. a horse) used for breeding
  • noun
  • A man who (looks like he) has many lovers
  • A small metallic decoration
  • An animal, esp. a horse, used for breeding
  • Small earring worn in the lobe of the ear
  • verb
  • To add many small metallic decorations to
  • To use a (male) animal for breeding e.g. a bull

carbon

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US / 'kɑ:bən /

UK / ˈkɑrbən /

B1
  • noun
  • Chemical element with an atomic number of 6

reason

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US / 'ri:zn /

UK / ˈrizən /

A1
  • noun
  • Ability to think about facts and form a judgment
  • Explanation for why something occurred or was done
  • verb
  • To think and make conclusions in a logical manner

here

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US / hɪə(r) /

UK / hɪr /

A1
  • adverb
  • In this place; at this location, position or time

meaning

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US / ˈmi:nɪŋ /

UK / ˈminɪŋ /

A1
  • noun
  • Idea or thing represented by words or sentences
  • verb
  • To express a particular idea or thought
  • To intend to do something in particular
  • To have a particular intention or value

small

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US / smɔ:l /

UK / smɔl /

A1
  • adjecitve
  • Little in size; not big
  • (Of letters) not written in capital letters
  • Being insignificant or minor
  • (Of a business) with few people or things; local
  • (Of voice) being soft and quiet
  • (Of a child) being young

surround

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US / səˈraʊnd /

UK / səˈraʊnd /

A2
  • other
  • To be closely connected to and have an effect on
  • verb
  • To be all the way around something
  • To be closely connected to and have an effect on
  • To move closer on all sides of something

thick

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US / θɪk /

UK / θɪk /

A2
  • adjecitve
  • Difficult to see through, as fog
  • Full of (people, etc.)
  • (Of a liquid) that moves or pours slowly
  • Stupid; not smart
  • (Of person's accent) hard to understand
  • Having a large distance between two surfaces

amino

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US / ə'miːnəʊ /

UK / ə'miːnəʊ /

C2
  • noun
  • Of some substances that form proteins

eat

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US / i:t /

UK / it /

A1
  • verb
  • To put food in your mouth

component

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US / kəmˈpəʊnənt /

UK / kəmˈponənt /

A2
  • adjecitve
  • Being a part of something
  • noun
  • One of the parts that something is made up of

contain

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US / kənˈteɪn /

UK / kənˈten /

A2
  • verb
  • To keep something from spreading
  • To hold something inside something else

inside

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US / ˌɪn'saɪd /

UK / ɪnˈsaɪd, ˈɪnˌsaɪd /

A2
  • adjecitve
  • Being in something
  • Being in a building
  • adverb
  • Into a house; indoors
  • noun
  • Inner part or surface of something

million

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US / ˈmɪljən /

UK / ˈmɪljən /

A1
  • number
  • 1,000,000

enclose

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US / ɪnˈkləʊz /

UK / ɪnˈkloʊz /

B1
  • verb
  • To place something in a package or envelope
  • To surround something

leftover

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US / ˈleftəʊvə(r) /

UK / ˈlɛftˌovɚ /

C2
  • adjecitve
  • (Of food) that you didn't eat at a meal

many

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US / 'menɪ /

UK / ˈmɛni /

A1
  • determiner
  • Used to refer a large number of things

warn

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US / wɔ:n /

UK / wɔrn /

A2
  • verb
  • To tell someone about possible danger

will

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US / wɪl /

UK / wɪl /

A1
  • noun
  • Desire or choice of someone
  • Document saying who gets your money when you die
  • Strong desire to do something; determination
  • Desire to do something; strong wish to do
  • other
  • Used with verbs to express the future
  • verb
  • To leave property to someone after your death
  • To use mental effort to make something happen
  • Am (is, are) likely to do
  • To influence someone to do something
  • To make something happen by strongly wanting it

attack

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US / ə'tæk /

UK / əˈtæk /

A2
  • noun
  • Act intended to hurt someone physically, mentally
  • verb
  • To try to destroy, beat, or injure

immediately

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US / ɪˈmi:diətli /

UK / ɪˈmidiɪtli /

A1
  • adverb
  • Without any delay; straight away

use

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US / ju:s /

UK / ju:s /

A1
  • noun
  • Ability to employ something
  • Need to enable it to work
  • Permission to do something with something
  • Act of spending money
  • Operation of a machine for its function
  • verb
  • To have; to eat, drink, consume etc.
  • To need to operate or work
  • To operate a machine, e.g. a computer
  • To treat a person badly
  • To do something with, for a task or purpose

someone

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US / ˈsʌmwʌn /

UK / ˈsʌmˌwʌn, -wən /

A1
  • pronoun
  • Person who is not known or named

again

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US / ə'ɡen /

UK / əˈɡɛn /

A1
  • adverb
  • One more time, once more

about

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US / ə'baʊt /

UK / əˈbaʊt /

A1
  • adverb
  • To be ready to; going to
  • Nearly; approximately; roughly
  • Near; next to; close to
  • In every direction; in the area of
  • preposition
  • Concerning or of (a topic)

different

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US / ˈdɪfrənt /

UK / ˈdɪfrənt /

A1
  • adjecitve
  • Not of the same kind; unlike other things

like

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US / laɪk /

UK / laɪk /

A1
  • adjecitve
  • Being equal in status or kind to something else
  • Similar; the same
  • adverb
  • For example
  • preposition
  • Used as a filler; used to ad emphasis
  • In a way similar to the way something is done
  • Such as; for example
  • verb
  • To want to
  • To find something pleasing; to prefer something

that

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US / ðæt /

UK / ðæt, ðət /

A1
  • adjecitve
  • The person or thing being talked about
  • Used to identify something both the speakers know
  • adverb
  • Used to reinforce adjectives and adverbs
  • To such a degree
  • conjunction
  • Used to connect a noun clause
  • Used to introduce an adverbial clause
  • Used to introduce a noun clause
  • determiner
  • Used as a noun to refer to something
  • pronoun
  • Referring an object far away
  • Used to refer to the relative pronoun ‘which’

action

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US / 'ækʃn /

UK / ˈækʃən /

A2
  • noun
  • Something that a person or thing does
  • verb
  • To act to do something

bacteria

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US / bæk'tɪərɪə /

UK / bækˈtɪriə /

B2
  • noun
  • The very small creatures that can cause disease

get

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US / ɡet /

UK / ɡɛt /

A1
  • verb
  • To become affected by illness or disease
  • To begin to feel or understand an emotion or idea
  • To send or bring someone or something home, etc.
  • To go somewhere to obtain something
  • To (cause to) do a particular thing
  • To obtain, receive or be given something
  • To currently have
  • To prepare for use
  • To understand something being said or read

block

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US / blɒk /

UK / blɑk /

A2
  • noun
  • Solid piece of material used for building
  • A piece of wood, chocolate etc.
  • Hard piece of wood, stone etc. with straight edges
  • Building made up of offices or apartments
  • Area of a city divided by four streets
  • verb
  • To stop from going forward or making progress

dna

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US / ˌdiː en ˈeɪ /

UK / ˌdiː en ˈeɪ /

B2
  • noun
  • Chemical in living cells with genetic information

down

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US / daʊn /

UK / daʊn /

A1
  • adjecitve
  • Being sad, sick, or unhappy
  • Not operating, working, or functioning as expected
  • adverb
  • In a sitting or lying position
  • Towards or on the ground, floor, or bottom
  • Written or copied onto a piece of paper or book
  • noun
  • A period of play in American Football
  • The soft, smooth hairs that cover a bird's body
  • preposition
  • Along something's path, course, or direction
  • Going from a higher position to a lower position
  • verb
  • To eat or drink very quickly and without stopping

then

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US / ðen /

UK / ðɛn /

A1
  • adverb
  • A time that is not now
  • Following another thing in time or arrangement
  • Following on reasonably from what was just stated
  • At that time, not now

cell

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US / sel /

UK / sɛl /

A2
  • noun
  • Smallest unit of living things in biology
  • Group of people - often from a secret organization
  • Prisoner's room in a jail
  • Shortened form of 'cellphone'

delivery

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US / dɪˈlɪvəri /

UK / dɪˈlɪvəri, -ˈlɪvri /

A2
  • noun
  • Way someone acts when speaking publicly
  • Act of taking something to a person or place

each

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US / i:tʃ /

UK / itʃ /

A1
  • determiner
  • Every one of two or more things
  • pronoun
  • Per one person or thing

fight

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US / faɪt /

UK / faɪt /

A1
  • noun
  • An argument or quarrel
  • Act of trying to hurt someone by hitting them
  • A struggle to do a difficult task
  • verb
  • To argue or quarrel with someone about something
  • To try to hurt someone by hitting them
  • To struggle to do a difficult task

flexible

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US / ˈfleksəbl /

UK / ˈflɛksəbəl /

B1
  • adjecitve
  • Bending easily
  • Able to adjust to new events, requirements easily

projection

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US / prəˈdʒekʃn /

UK / prəˈdʒɛkʃən /

B1
  • noun
  • A prediction; guess about future developments
  • An image on a screen
  • A part that sticks out

suck

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US / sʌk /

UK / sʌk /

B1
  • noun
  • Drawing of liquid into a tube or hole
  • phrasal verb
  • To trick or deceive someone into doing something
  • verb
  • To be very bad, undesirable or unpleasant
  • To be very bad, undesirable, or unpleasant
  • To pull or remove something with great power
  • To attract someone; make someone interested
  • To draw into your mouth through a small hole

track

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US / træk /

UK / træk /

A2
  • noun
  • A circular course for running
  • Course or way someone takes, e.g. in education
  • Path in a field or a forest made by walkers
  • Often circular course laid out for car racing
  • One of multiple musical recordings on an album
  • Band surrounding the wheels of a tank
  • Metal lines that trains ride on
  • verb
  • To use marks to follow a wild animal
  • To move a certain way/follow a particular course
  • To record and examine the progress of something

tell

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US / tel /

UK / tɛl /

A1
  • verb
  • To (strongly) advise a person to do something
  • To be able to guess
  • To say or communicate information to someone
  • To inform, but without speaking; indicate
  • To have a negative effect on someone
  • To order someone to do something; command
  • To recognize something based on certain signs
  • To report something to an authority
  • To explain something or teach someone something

energy

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US / 'enədʒɪ /

UK / ˈɛnədʒi /

A2
  • noun
  • Physical or mental strength

find

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US / faɪnd /

UK / faɪnd /

A1
  • noun
  • Object discovered by chance
  • Things that have been discovered from searching
  • verb
  • To become aware of something that is happening
  • To discover or meet by chance
  • To decide if someone is guilty of a crime, or not
  • To learn through study, research, or effort
  • To discover something by looking for it

grocery

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US / 'ɡrəʊsərɪ /

UK / 'ɡroʊsərɪ /

B2
  • noun
  • Daily foods such as flour, sugar, and tinned foods

oxygen

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US / 'ɒksɪdʒən /

UK / ˈɑksɪdʒən /

B1
  • noun
  • A gas in the air that we need to breathe

right

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US / raɪt /

UK / raɪt /

A1
  • adjecitve
  • Correct or true
  • The south side of you looking at the rising sun
  • adverb
  • Exactly in a place or time
  • Being appropriate for a particular event
  • In a straight or direct manner
  • noun
  • Something you are legally or morally allowed to do
  • Ideal of what is just and good
  • Political view based on conservatism
  • verb
  • To fix something previously wrong or unjust
  • To make upright, as a boat that has turned over

direction

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US / də'rekʃn /

UK / dɪˈrɛkʃən, daɪ- /

A2
  • noun
  • When someone tells people what to do
  • Describes the way you are going, e.g. North

section

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US / 'sekʃn /

UK / ˈsɛkʃən /

B1
  • noun
  • A part of a whole
  • Specific area or region within a larger place
  • Specific group of people from a larger group
  • Part of a book, newspaper, etc.
  • verb
  • To divide something into smaller parts

their

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US / ðɛː /

UK / ðer /

A1
  • determiner
  • Belonging to them

way

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US / weɪ /

UK / we /

A1
  • adverb
  • Used to emphasize the amount of something
  • noun
  • Particular aspect of something being thought about
  • One of various choices that could be made
  • Particular existing condition or state
  • (Often long) distance or length of time
  • How something is done
  • Route to go to a place
  • Small street
  • Usual behavior, emotions or habits of someone

everything

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US / 'evrɪθɪŋ /

UK / ˈɛvriˌθɪŋ /

A1
  • pronoun
  • All of the things mentioned

they

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US / ðeɪ /

UK / ðe /

A1
  • pronoun
  • Two or more people, animals, or things

all

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US / ɔ:l /

UK / ɔl /

A1
  • adverb
  • Completely; totally
  • determiner
  • Being every one of something
  • pronoun
  • 100% of something; the complete amount

its

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US / ɪts /

UK / ɪts /

A1
  • adjecitve
  • Referring to or belonging to ‘it’
  • determiner
  • Of something; belonging or related to something
  • other
  • Possessive form of “it”

work

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US / wɜ:k /

UK / wɚk /

A1
  • adjecitve
  • Activity completed in order to make money
  • noun
  • The product of some artistic or literary endeavor
  • Everything created by an author, artist, musician
  • Activity you do in order to make money
  • Place of employment
  • Final product or result of a some labor or effort
  • verb
  • To bring into a specific state of success
  • To be functioning properly, e.g. a car
  • To do your job in your company or workplace
  • To make an effort to do something
  • To operate a machine or device

add

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US / æd /

UK / æd /

A1
  • verb
  • To include as well
  • To put two things or numbers together, e.g. 2+2

bring

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US / brɪŋ /

UK / brɪŋ /

A1
  • verb
  • To take or go with someone to a place

dioxide

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US / daɪˈɒksaɪd /

UK / daɪˈɑksaɪd /

B2
  • noun
  • An oxide containing two oxides per molecule

fat

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US / fæt /

UK / fæt /

A1
  • adjecitve
  • Having too much weight for the body size
  • Bringing or having a large amount of money
  • noun
  • Amount beyond what is usual or necessary
  • Oily part of meat

link

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US / lɪŋk /

UK / lɪŋk /

A2
  • noun
  • Any one of the rings that are part of a chain
  • Connection between two or more things or people
  • Webpage item you click to go to another webpage
  • verb
  • To join or connect together

neighbour

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US / 'neɪbə(r) /

UK / ˈnebɚ /

B1
  • noun
  • Person who lives, or is near, you

take

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US / teɪk /

UK / tek /

A1
  • noun
  • Filming of a single scene for TV or the movies
  • verb
  • To accept something that is offered
  • To use a method of traveling, e.g. a bus or train
  • To use a camera to make (a photo)
  • To pick up something and go away with it
  • To study a subject in school
  • To attempt to pass (an exam)
  • To require a certain amount of time, money, space

display

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US / dɪˈspleɪ /

UK / dɪˈsple /

A2
  • noun
  • Arrangement of objects so people can see or buy
  • verb
  • (Animals) to indicate readiness for sex
  • To show, e.g. your feelings, thoughts; demonstrate
  • To put so they can be seen or be bought

human

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US / 'hju:mən /

UK / ˈhjumən /

A1
  • adjecitve
  • Concerning or characteristic of people
  • noun
  • A person; a man, woman or child

travel

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US / ˈtrævl /

UK / ˈtrævəl /

A1
  • noun
  • Going to other places, esp. distant places
  • verb
  • To go to a place that is far away

virus

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US / 'vaɪrəs /

UK / ˈvaɪrəs /

B1
  • noun
  • File secretly put on computers to cause harm
  • Living organism that causes disease or sickness

process

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US / prə'ses /

UK / ˈprɑsˌɛs, ˈproˌsɛs /

A2
  • noun
  • Dealing with official forms in the way required
  • Set of changes that occur slowly and naturally
  • verb
  • To organize and use data in a computer
  • To deal with official forms in the way required
  • To prepare by treating something in a certain way
  • To adopt a set of actions that produce a result
  • To convert by putting something through a machine

store

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US / stɔ:(r) /

UK / stɔr, stor /

A2
  • noun
  • Place where things are kept for future use
  • Place where you can go to buy things
  • verb
  • To put things in a place for later use

with

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US / wɪð /

UK / wɪð, wɪθ /

A1
  • preposition
  • As an employee of a certain company
  • Against something or someone
  • By using something as a means
  • Due to; because of
  • Including
  • Possessing as a feature
  • Related to
  • (Of the manner/attitude by which you do something)
  • Used to express that people or things are together

scientist

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US / ˈsaɪəntɪst /

UK / ˈsaɪəntɪst /

A2
  • noun
  • Person who is trained in a science

break

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US / breɪk /

UK / brek /

A1
  • noun
  • Time you stop an activity before continuing
  • End of a relationship
  • An escape from a place such as a jail
  • (Lucky) advantage or benefit from something
  • Find a solution or answer to a problem or crime
  • Change in the weather
  • verb
  • To create a new record e.g. running the 100m dash
  • To form a crack in something
  • To burst or become damaged
  • To end a relationship
  • To escape from a place such as a jail
  • To train a wild animal e.g. a horse
  • To separate into pieces by force, or by dropping
  • To act against a law, rule, or promise
  • To become known suddenly, as in the news
  • To not do what you promised e.g. not keep promises
  • To solve a crime, or answer a problem
  • To stop functioning properly
  • To suddenly start, open or commence
  • To change in pitch suddenly, as in a voice
  • To fall on the shore, as in waves
  • To begin or change suddenly; the dawn or weather
  • To defeat by causing the person to lose their will

chloroplast

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US / 'klɒrəplɑ:st /

UK / 'klɔ:rəplæst /

A1
  • noun
  • Plastid containing chlorophyll and other pigments; in plants that carry out photosynthesis

recycle

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US / ˌri:'saɪkl /

UK / riˈsaɪkəl /

A2
  • verb
  • To use old ideas or concepts again
  • To send used things to be turned into new things

sun

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US / sʌn /

UK / sʌn /

A1
  • noun
  • Light and heat coming from a large star in the sky
  • Hot shining star the Earth moves around
  • verb
  • To lie in the sunshine and enjoy its warmth

before

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US / bɪˈfɔ:(r) /

UK / bɪˈfɔr,-ˈfor /

A1
  • adverb
  • At a time earlier than the present; previously
  • conjunction
  • In advance of something happening
  • preposition
  • In front of someone or something

cover

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US / 'kʌvə(r) /

UK / ˈkʌvɚ /

A1
  • noun
  • A different version of another song
  • Bed sheets; blankets
  • (Police or military) protection from attack
  • Amount of money to be paid in an insurance claim
  • Thing you put over something to close or hide it
  • Front and back part of a book or magazine
  • Shelter built to protect from the natural elements
  • verb
  • To record a different version of another song
  • To include as part of its area
  • To put something over something to hide it
  • To discuss a subject in a talk or meeting
  • To form a layer over something so it is hidden
  • To have sufficient funds to pay for something
  • To include something within an agreed limit
  • To report news on TV, radio or in a newspaper
  • (Police or military) to protect from attack
  • To travel a certain distance in a given time
  • To wrap something with something, such as a cloth

have

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US / həv /

UK / hæv /

A1
  • verb
  • To drink, smoke, eat or use something
  • To experience the effects of something
  • To organize an event, or join in an activity
  • To own, possess, or hold something
  • To cause to happen or produce a particular effect

lung

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US / lʌŋ /

UK / lʌŋ /

B1
  • noun
  • One of the two organs we use to breathe

part

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US / pɑ:t /

UK / pɑ:rt /

A1
  • adjecitve
  • To some degree; half; not fully
  • noun
  • Division of a book
  • Ratio of something, e.g. 3 of gin, 1 of tonic
  • A line in a person's hair, made with a comb
  • Character an actor plays on stage, movie, or TV
  • Some, but not all of a specific thing
  • Role in causing something to happen
  • verb
  • To make a line in a person's hair, by using a comb
  • To move two things apart creating a space
  • To leave someone, or to break off a relationship

scene

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US / si:n /

UK / sin /

A2
  • noun
  • Incident where someone behaves angrily, badly
  • View that looks like a picture
  • Place where something particular happened
  • Part of an act in a play

see

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US / si: /

UK / si /

A1
  • verb
  • To go on a date with someone
  • To predict whether something is, or will be true
  • To understand what someone says
  • To use your eyes to look at something
  • To visit a place often for sightseeing or pleasure
  • To visit or meet with someone
  • To find out by waiting or looking
  • To watch (a game, movie or TV show)

protect

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US / prə'tekt /

UK / prəˈtɛkt /

A1
  • verb
  • To defend someone or something from harm or danger
  • Introduction to Video Content
  • In the battle for health, our cells play a crucial role. Whether it's a common cold virus or a more dangerous invader, our cells have a defense mechanism to protect us. Every living thing on Earth is made up of cells, from the tiniest bacteria to the largest blue whale. Inside our bodies, each cell is surrounded by a cell membrane, a flexible layer made of fats and proteins. This membrane is semipermeable, allowing some substances to pass through while blocking others. Animal and plant cells both have cell membranes, but only plant cells have an additional rigid cell wall made of cellulose. When a virus enters our body, it tries to deceive our cells by attaching to a projection on the cell membrane, pretending to be a friend. However, once inside the cell, the cell recognizes the invader and triggers a defense mechanism. Special enzymes arrive at the scene and destroy the virus, cutting it into pieces. One of these pieces is then displayed on the cell membrane as a warning to neighboring cells. Upon seeing the warning, nearby cells activate their own defense mechanisms by producing antibodies. This process starts in the nucleus, which contains our DNA, the blueprint for our body's functions. A specific section of our DNA contains instructions for creating antibodies. This battle between our cells and viruses is an ongoing struggle, but our bodies have evolved sophisticated defense mechanisms to keep us healthy.
  • Subtitles section
  • You're in line at the grocery store when, uh oh, someone sneezes on you.
  • The cold virus is sucked inside your lungs and lands on a cell on your airway lining.
  • Every living thing on Earth is made of cells, from the smallest one-celled bacteria to the giant blue whale to you.
  • Each cell in your body is surrounded by a cell membrane, a thick flexible layer made of fats and proteins, that surrounds and protects the inner components.
  • It's semipermeable, meaning that it lets some thing pass in and out but blocks others.
  • The cell membrane is covered with tiny projections.
  • They all have functions, like helping cells adhere to their neighbors or binding to nutrients the cell will need.
  • Animal and plant cells have cell membranes.
  • Only plant cells have a cell wall, which is made of rigid cellulose that gives the plant structure.
  • The virus cell that was sneezed into your lungs is sneaky.
  • Pretending to be a friend, it attaches to a projection on the cell membrane, and the cell brings it through the cell membrane and inside.
  • When the virus gets through, the cell recognizes its mistake.
  • An enemy is inside!
  • Special enzymes arrive at the scene and chop the virus to pieces.
  • They then send one of the pieces back through the cell membrane, where the cell displays it to warn neighboring cells about the invader.
  • A nearby cell sees the warning and immediately goes into action.
  • It needs to make antibodies, proteins that will attack and kill the invading virus.
  • This process starts in the nucleus.
  • The nucleus contains our DNA, the blueprint that tells our cells how to make everything our bodies need to function.
  • A certain section of our DNA contains instructions that tell our cells how to make antibodies.
  • Enzymes in the nucleus find the right section of DNA, then create a copy of these instructions, called messenger RNA.
  • The messenger RNA leaves the nucleus to carry out its orders.
  • The messenger RNA travels to a ribosome.
  • There can be as many as 10 million ribosomes in a human cell, all studded along a ribbon-like structure called the endoplasmic reticulum.
  • This ribosome reads the instructions from the nucleus.
  • It takes amino acids and links them together one by one creating an antibody protein that will go fight the virus.
  • But before it can do that, the antibody needs to leave the cell.
  • The antibody heads to the golgi apparatus.
  • Here, it's packed up for delivery outside the cell.
  • Enclosed in a bubble made of the same material as the cell membrane, the golgi apparatus also gives the antibody directions, telling it how to get to the edge of the cell.
  • When it gets there, the bubble surrounding the antibody fuses to the cell membrane.
  • The cell ejects the antibody, and it heads out to track down the virus.
  • The leftover bubble will be broken down by the cell's lysosomes and its pieces recycled over and over again.
  • Where did the cell get the energy to do all this?
  • That's the roll of the mitochondria.
  • To make energy, the mitochondria takes oxygen, this is the only reason we breathe it, and adds electrons from the food we eat to make water molecules.
  • That process also creates a high energy molecule, called ATP which the cell uses to power all of its parts.
  • Plant cells make energy a different way.
  • They have chloroplasts that combine carbon dioxide and water with light energy from the sun to create oxygen and sugar, a form of chemical energy.
  • All the parts of a cell have to work together to keep things running smoothly, and all the cells of your body have to work together to keep you running smoothly.
  • That's a whole lot of cells.
  • Scientists think there are about 37 trillion of them.