Respiratory enzymes are present in

Alternate name of $TCA$ cycle is

How many substrate-level $ATP$ (or $GTP$) molecules are synthesized when $\alpha$-ketoglutaric acid is converted into succinic acid in the Krebs cycle?

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

In the citric acid cycle,the first step is:

The citric acid cycle begins with the reaction . . . . . . .