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Question

In Krebs' cycle, OAA accepts acetyl CoA to form

A
citric acid
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B
oxalosuccinate
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C
fumarate
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D
succinyl CoA
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Solution

The correct option is A citric acid
Acetyl CoA (2-carbon compound) combines with oxaloacetate (4-carbon compound) in the presence of condensing enzyme citrate synthase to form a tricarboxylic 6-carbon compound called citric acid. It is the first product of kerbs' cycle. CoA is liberated.
AcetylCoA+Oxaloaceticacid+H2OCitratesynthase−−−−−−−−−−−−−Citrate+CoA

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