enzyme

enzyme — noun

1. a protein produced inside a living cell that speeds up a chemical reaction in th

1.名詞B2
釋義

a protein produced inside a living cell that speeds up a chemical reaction in the body without being used up or changed during the process

例句

Roya learned in biology class that the enzyme in saliva helps break down starch into sugar.

enzyme + breaks down [substance] — typical verb-object pattern

Without the right enzyme, Niran's body cannot digest milk products properly.

adjective + enzyme for a specific function: right enzyme

同義詞
  • biological catalyst

    broader descriptive phrase; any catalyst found in living systems, not limited to proteins

  • catalyst

    much broader — includes non-biological substances; enzymes are a subset of catalysts that are proteins made by cells

文法句型

adjective + enzyme (digestive / specific / liver enzyme)

enzyme + verb (breaks down / speeds up / catalyses)

用法筆記

Often followed by a description of what the enzyme breaks down or speeds up. The most common verbs paired with this sense are produce, release, block, activate, and break down.

常見錯誤

❌The enzyme can help to speed up the reaction catalysed by the enzyme itself.
✅The enzyme speeds up the chemical reaction without being changed by it.
💡avoid circular wording; enzymes speed up reactions, not themselves.
❌My body does not have the protein to digest milk.
✅My body does not have the enzyme needed to digest milk.
💡not all proteins are enzymes; use 'enzyme' when referring to a substance that speeds up a specific reaction.