Which of the Following Does NOT Serve as an Intermediate

Question

Which of the following does NOT serve as an intermediate in the biosynthesis of amino acids?
A) citrate
B) 2-oxoglutarate
C) pyruvate
D) 3-phosphoglycerate
E) pentose phosphate

Accepted Answer

Citrate is primarily involved in the citric acid cycle and is not a direct intermediate in the biosynthesis of amino acids. The other options are intermediates in pathways that lead to amino acid synthesis.