The product formed by malate dehydrogenase is

How many times does decarboxylation take place during the complete oxidation of one molecule of acetyl $\text{CoA}$ in aerobic respiration?

Citrate,the first stable product of the Krebs cycle,undergoes how many oxidation and decarboxylation steps respectively to regenerate oxaloacetate?

Reduced coenzyme $FADH_2$ is formed between which of the following intermediates in the Krebs cycle?

Describe the Krebs cycle.

$A$: Succinyl $CoA$ is the precursor of pyrrole group-containing compounds.
$R$: Succinyl $CoA$ is an intermediate of the $TCA$ cycle.