Meaning & use
enzyme
A protein produced by living cells that speeds up a specific chemical reaction in the body.
See it in a sentence
The enzyme lactase helps the body break down sugar found in milk.
Cold temperatures slow the enzymes responsible for ripening fruit after it is picked.
A note on using this word
Enzymes are highly specific, usually acting on only one type of molecule or reaction in the body.
Words with a similar meaning
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