Which of the following statements is incorrec | vedclass

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(D) The Krebs cycle (or Citric Acid Cycle) begins with the condensation of Acetyl $CoA$ $(2C)$ with Oxaloacetic acid $(4C)$ to form Citric acid $(6C)$

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Acetyl $CoA$ combines with pyruvic acid to form citric acid.

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(D) The Krebs cycle (or Citric Acid Cycle) begins with the condensation of Acetyl $CoA$ $(2C)$ with Oxaloacetic acid $(4C)$ to form Citric acid $(6C)$.Option $D$ states that Acetyl $CoA$ combines with pyruvic acid,which is incorrect.In the cycle,$NAD^+$ is reduced to $NADH + H^+$ at three steps (Isocitrate to $\alpha$-ketoglutarate,$\alpha$-ketoglutarate to succinyl $CoA$,and Malate to Oxaloacetate).$FAD^+$ is reduced to $FADH_2$ at one step (Succinate to Fumarate).Substrate-level phosphorylation occurs during the conversion of succinyl $CoA$ to succinic acid,producing $GTP$ (or $ATP$).

Column $I$	Column $II$
$i.$ Isocitrate dehydrogenase	$a.$ Citrate $\rightarrow$ Cis-aconitate
$ii.$ Fumarase	$b.$ Succinate $\rightarrow$ Fumarate
$iii.$ Aconitase	$c.$ Fumarate $\rightarrow$ Malate
$iv.$ Succinate dehydrogenase	$d.$ Isocitrate $\rightarrow$ Oxalosuccinic acid

Which of the following statements is incorrect regarding the Krebs cycle?

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