When the diet contains an adequate amount of protein, what amino acid can be used by the body to synthesize niacin? a. phenylalanine b. valine c. glycine d. tryptophan e. lysin?

Agene with the original sequence of atgtt—tact underwent substitution mutation to form atatt—tact after a few generations. tact is a part of a muscle protein encoding region, and atgtt codes for a digestive enzyme. what will be the effect of this mutation? a. the production of muscle protein will be affected. b. the production of digestive enzymes will be affected. c. the production of both the protein and the enzyme will be affected. d. the production of neither the protein nor the enzyme will be affected.

Nucleic acid certain protein cell membranes certain carbohydrates

Ais a group of individuals of the same that exist together in the same place at the same time