Which statement about enzymes is true?

a.) an enzyme functions to increase the rate of a chemical reaction
b.) enzymes are proteins that function as catalysts in nonliving things
c.) each enzyme can catalyze many different biochemical reactions
d.) enzymes and substrates fit together like a lock and key

C

Explanation:

Enzymes act as a catalyst for causing biochemical reactions

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

the element that provides strength to the exoskeletons of clams and oysters is phosphorus. this is so because calcium carbonate is the main component in the shells.

explanation: