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Question

Acetyl CoA forms a 6-C compound after combining with

A
Malic acid
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B
Citric acid
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C
Succinic acid
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D
Oxaloacetic acid
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Solution

The correct option is D Oxaloacetic acid
Pyruvic acid is converted to Acetyl CoA (2 C) by the link reaction through the pyruvate dehydrogenase complex. Acetyl CoA can now enter Krebs' cycle by combining with oxaloacetic acid which is a 4 carbon compound. So the citric acid that is formed is a 6 carbon compound.
So, the correct answer is 'Oxaloacetic acid'.

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