What amino acid is classified as conditionally essential when dietary intake of phenylalanine is insufficient or the body cannot normally metabolize phenylalanine?

Question

Quizplus · Accepted Answer

Tyrosine is classified as a conditionally essential amino acid because it can be synthesized from phenylalanine in the body. However, when dietary intake of phenylalanine is insufficient or the body cannot normally metabolize phenylalanine, tyrosine becomes essential and must be obtained from the diet.

What Amino Acid Is Classified as Conditionally Essential When Dietary