Multiple Choice
About half of the 20 amino acids are called essential because
A) they are essential for the synthesis of pyrimidines.
B) they are essential for the synthesis of purines.
C) they are essential for nitrogen metabolism.
D) our bodies need them for protein synthesis.
E) our bodies cannot synthesize them and therefore they need to be present in our diet.
Correct Answer:
Verified
Correct Answer:
Verified
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