alleryDuring TCA cycle, GTP (eventually ATP) is generated at the step where
AMalate is oxidised to oxaloacetate
BSuccinyl CoA is converted to succinate
CCitrate is isomerised to isocitrate
DAlpha-ketoglutarate is decarboxylated
Answer & Solution
Correct answer: B. Succinyl CoA is converted to succinate
Succinyl CoA synthetase couples succinyl CoA hydrolysis to GTP synthesis.
This is the only substrate-level phosphorylation step in TCA.
GTP is then converted to ATP by nucleoside diphosphate kinase.
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