Question

question
which of the following statements about enzymes are true?
select all that apply
□ they accelerate chemical reactions.
□ they raise the activation energy required to start a chemical reaction.
□ they are catalysts.
□ they are proteins.

Explanation:

Enzymes are biological catalysts that accelerate chemical reactions by lowering the activation - energy required for the reaction to start. Most enzymes are proteins.

Answer:

They accelerate chemical reactions.
They are catalysts.
They are proteins.