The process used in the conversion of pyruvate to acetyl $CoA$ is:

In the following reaction,identify $X$ and $Y$ respectively.
$\text{Pyruvic acid} + \text{CoA} + \text{NAD}^+ \xrightarrow[X]{\text{Mg}^{2+}} Y + \text{CO}_2 + \text{NADH} + \text{H}^+$

In the Krebs cycle,$\alpha$-ketoglutaric acid is converted into malic acid. During this phase,how many $NADH$,$FADH_2$,and $ATP$ are formed?

Select the correct sequence of intermediates formed during the Krebs cycle.

During the citric acid cycle,various organic acids undergo decarboxylation. Which of the following organic acids of the cycle have $4C$,$5C$,and $6C$ respectively?

The number of substrate level phosphorylations in one turn of citric acid cycle is