Vitamins and nutriens are an essential part of our diet because
A. they are necessary for maintaining an environment in the gut that promotes the survival of symbiotic bacteria.
B. they bind to enzymes, changing the structure of the enzyme in such a way that it is more likely to bind substrate.
C. they are necessary for the formation of H bonds between the collagen molecules that form an esssential part of the extracellular matrix that supports cells.
D. stimulate the division of stem cell populations that replenish lost cells in the body.
Answer: B