Phenylalanine is a(n)____ and the starting point for a network of metabolic pathways.
A) lactase precursor molecules
B) carbohydrate by-products of respiration
C) essential amino acid
D) sub-types of hemoglobin
E) phenylthiocarbamides

Question

Quizplus · Accepted Answer

Phenylalanine is an essential amino acid, meaning it cannot be synthesized by the human body and must be obtained through the diet. It is a starting point for a network of metabolic pathways involved in neurotransmitter synthesis, protein production, and other important processes.

Phenylalanine Is A(n)____ and the Starting Point for a Network