[Campbell Biology P.948] Which of the following amino acids is not listed as one of the eigh... | Practice Question

Which of the following amino acids is not listed as one of the eight essential amino acids required in the diet of adult humans?

  • A: Tryptophan
  • B: Methionine
  • C: Glycine
  • D: Valine

Explanation

The "Essential Amino Acids" section states: "Many animals, including adult humans, require eight amino acids in their diet: isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine." Glycine is not on this list.