Question

1. why are enzymes considered reusable? * a) enzymes are constantly renewed by other enzymes. b) enzymes are made of unusually strong materials. c) enzymes are constantly regenerated by respiration. d) enzymes are not changed when they catalyze a chemical reaction.

Explanation:

Los enzimas son catalizadores biológicos. Al catalizar una reacción química, no se consumen ni cambian químicamente. Pueden ser usados múltiples veces para la misma reacción.

Answer:

D. Enzymes are not changed when they catalyze a chemical reaction.