Link reaction in aerobic respiration is catalyzed by a large enzyme complex pyruvate dehydrogenase which involves

Read the following statement w.r.t. Krebs' cycle and select the correct option:
A. Acetyl-CoA, a high energy compound, acts as the substrate entrant for the cycle.
B. All the enzymes of the Krebs'  cycle are present in the mitochondrial matrix.
C. A single turn of Krebs' cycle produces 1 FADH2, 3 NADH2 and 1 ATP.

How many mentioned steps (a, b, c) occur per glucose molecule during aerobic respiration?

Oxidoreductase reaction

Substrate level phosphorylation

Decarboxylation reaction

Identify X, Y and Z.

$\mathrm{A}+\mathrm{B}+{\mathrm{FAD}}^{+}+3{\mathrm{H}}_2\mathrm{O}+\mathrm{ADP}+\mathrm{Pi}\stackrel{\mathrm{Mitochondrial}}{\underset{\mathrm{Matrix}}{\to }}$ $\mathrm{C} + \mathrm{D} +4{\mathrm{H}}^{+}+{\mathrm{FADH}}_2\hspace{0.17em}+\hspace{0.17em}\mathrm{ATP}$