Ron's diet lacks niacin.He hasn't developed pellagra,because he consumes a high-protein diet that contains plenty of _____,the precursor for niacin.
A)alanine
B)tryptophan
C)beta-carotene
D)alpha-tocopherol

Question

Quizplus · Accepted Answer

Tryptophan is an essential amino acid that can be converted to niacin in the body. Therefore, consuming a high-protein diet that contains plenty of tryptophan can provide the precursor for niacin and prevent pellagra.

Ron's Diet Lacks Niacin