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Q: Which of the following is an essential amino acid?
  • A. Phenylalanine
  • B. Tyrosine
  • C. Alanine
  • D. Arginine
Correct Answer: Option A - Essential amino acids are organic compounds composed mainly of nitrogen, carbon, hydrogen & oxygen, Amino acids needs to function in our body. We can get them from certain food sources . Only 9 amino acids are classified as essential - These are Histidine, Isoleucine, Leucine, Lysine, Methionine, Phenylalanine, Threonine, Tryptophan and valine. Tyrosine, Alanine & Arginine are non-essential amino acids.
A. Essential amino acids are organic compounds composed mainly of nitrogen, carbon, hydrogen & oxygen, Amino acids needs to function in our body. We can get them from certain food sources . Only 9 amino acids are classified as essential - These are Histidine, Isoleucine, Leucine, Lysine, Methionine, Phenylalanine, Threonine, Tryptophan and valine. Tyrosine, Alanine & Arginine are non-essential amino acids.

Explanations:

Essential amino acids are organic compounds composed mainly of nitrogen, carbon, hydrogen & oxygen, Amino acids needs to function in our body. We can get them from certain food sources . Only 9 amino acids are classified as essential - These are Histidine, Isoleucine, Leucine, Lysine, Methionine, Phenylalanine, Threonine, Tryptophan and valine. Tyrosine, Alanine & Arginine are non-essential amino acids.