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Byju's Answer
Standard XII
Biology
Respiratory Substrates
Which among t...
Question

Which among the following intermediates of TCA cycle can enter amino acid biosynthesis?

A
Alpha-ketoglutaric acid
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B
Malic acid
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C
Citric acid
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D
Isocitric acid
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Solution

The correct option is A Alpha-ketoglutaric acid
TCA cycle is an amphibolic pathway in which some substrates like the alpha-ketoglutarate, oxaloacetate, citrate, acetyl CoA etc. can be used both in catabolic and anabolic pathways. Alpha-ketoglutarate (alpha-ketoglutaric acid) is used in the synthesis of various amino acids like the glutamate.

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