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)alpha-tocopherol
B)beta-carotene
C)alanine
D)tryptophan

Question

Quizplus · Accepted Answer

Tryptophan is an essential amino acid, which the body converts to niacin. This conversion process is not efficient, but it can help to prevent niacin deficiency if a person's diet lacks niacin. Therefore, Ron's high-protein diet is likely to provide him with enough tryptophan to prevent pellagra from developing.

Ron's Diet Lacks Niacin