Question

Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these:

• A. enhance oxidative metabolism
• B. are conjugated proteins
• C. are exclusively synthesized in the body of a living organism as at present
• D. help in regulating metabolism

Answer 1

Answer: (D)

help in regulating metabolism

Answer 2

Enzymes facilitate chemical reactions in metabolism, vitamins are essential coenzymes and cofactors that assist enzymes, and hormones are chemical messengers that regulate various metabolic processes in the body.

So, the correct option is (D): help in regulating metabolism