![Enzymes, vitamins and hormones can be classified into a single category of biological chemicals because all of them](https://www.gkseries.com/blog/wp-content/uploads/2022/01/Enzymes-vitamins-and-hormones-can-be-classified-into-a-single-category-of-biological-chemicals-because-all-of-them-1.png)
Q. Enzymes, vitamins and hormones can be classified into a single category of biological chemicals because all of them
A. Aid in regulating metabolism
B. Are synthesised in organism
C. Are proteins
D. Enhance the oxidation metabolism
Answer: are proteins