An essential amino acid:
A) is not necessary to the diet.
B) must be supplied by the diet.
C) can be made from glucose in the body.
D) can be made from fat in the body.
E) includes alanine.

Question

Quizplus · Accepted Answer

Essential amino acids cannot be synthesized by the body and must be obtained from the diet. Therefore, option B is correct. Option A is incorrect because if an amino acid is not necessary, it wouldn't be considered essential. Option C and D are incorrect because amino acids cannot be made from glucose or fat, respectively. Option E is incorrect because alanine is a non-essential amino acid, meaning it can be synthesized by the body.

An Essential Amino Acid