The amino acid from which niacin is synthesized is
Q. The amino acid from which niacin is synthesized is
A. Tyrosine
B. Tryptophan
C. Threonine
D. Histidine
Answer: Tryptophan
A. Tyrosine
B. Tryptophan
C. Threonine
D. Histidine
Answer: Tryptophan