enzyme
Pronunciation
Noun
B2 Upper-intermediate
Quick answer
A protein produced by living cells that speeds up a chemical reaction without being used up itself.
Usage notes
Enzyme names often end in "-ase", such as "lactase" or "amylase".
Test yourself
Which word fits the gap? "_____ in saliva begin breaking down food as soon as you start chewing."
Answer: enzyme
In your own words, what does "enzyme" mean?
A protein produced by living cells that speeds up a chemical reaction without being used up itself.
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