Question

select the true statement(s) about enzymes. enzymes increase biochemical reaction rates. enzymes are proteins. enzymes decrease activation energy. enzymes are reusable. enzymes are catalysts.

Explanation:

1. Enzymes are biological catalysts that increase the rate of biochemical reactions by lowering the activation - energy required for the reaction to occur.
2. While most enzymes are proteins, some RNA molecules can also act as enzymes (ribozymes), so the statement "Enzymes are proteins" is not entirely true.
3. Enzymes are not consumed in the reactions they catalyze, so they are reusable.

Answer:

A. Enzymes increase biochemical reaction rates.
C. Enzymes decrease activation energy.
D. Enzymes are reusable.
E. Enzymes are catalysts.