Question

in human cells, many b vitamins
multiple choice
are metabolized for energy
are needed to make coenzymes
have enzymatic functions
have hormonal functions

Explanation:

B vitamins (such as B1, B2, B3, etc.) play crucial roles in human cells. They are not metabolized for energy (carbohydrates, fats, and proteins are the main energy - yielding nutrients). Enzymes are proteins that catalyze reactions, and while B vitamins are involved in enzyme - related processes, they themselves do not have enzymatic functions in the sense of being the protein part of the enzyme. Hormonal functions are typically associated with hormones like insulin, estrogen, etc., not B vitamins. However, many B vitamins are precursors or components of coenzymes. For example, niacin (B3) is part of NAD+ (nicotinamide adenine dinucleotide) which is a coenzyme.

Answer:

are needed to make coenzymes