Match List I with List II: 

List I	List II
A. Oxidative decarboxylation	I. Citrate synthase
B. Glycolysis	II. Pyruvate dehydrogenase
C. Oxidative phosphorylation	III. Electron transport system
D. Tricarboxylic acid cycle	IV. EMP pathway

Choose the correct answer from the options given below: 

In the following reaction, identify $\mathrm{X}$ and $\mathrm{Y}$ respectively: 

$\mathrm{Pyruvic} \mathrm{acid}+\mathrm{CoA}+{\mathrm{NAD}}^{+}\underset{\mathrm{x}}{\overset{{\mathrm{Mg}}^{2+}}{\to }}\mathrm{Y}+{\mathrm{CO}}_2+\mathrm{NADH}+{\mathrm{H}}^{+}$

Write down the names of missing intermediate compounds in a sequence in the given diagrammatic representation of Kreb’s cycle.

Match the metabolic pathways in Column I with their corresponding intermediate molecules listed in Column II

Choose the CORRECT combination.

Identify the reactions where energy is produced:

I. $\mathrm{Malic} \mathrm{acid}+{\mathrm{NAD}}^{+} \stackrel{\mathrm{Malate}dehydrogenase}{⟶} \mathrm{oxaloacetic} \mathrm{acid}+\mathrm{NADH}$

II. $\mathrm{Citric} \mathrm{acid} \stackrel{\mathrm{Aconitase}}{⟶} \mathrm{cis}-\mathrm{aconitic} \mathrm{acid}+{\mathrm{H}}_2\mathrm{O}$

III. $\mathrm{Succinic} \mathrm{acid}+\mathrm{FAD} \stackrel{ \mathrm{Succinic} \mathrm{dehydrogenase} }{⟶} \mathrm{Fumaric} \mathrm{acid}+{\mathrm{FADH}}_2$

IV.  $\mathrm{Succinyl} \mathrm{CoA}+\mathrm{ADP}+\mathrm{Pi} \underset{\mathrm{Thiokinase}}{\overset{\mathrm{Succinic}}{\to }} \mathrm{Succinic} \mathrm{acid}+\mathrm{ATP}+\mathrm{CoA}$

V. $\mathrm{Oxalosuccinic} acid\underset{ \mathrm{decarboxylase}}{\overset{\mathrm{Oxalosuccinic} }{\to }} \mathrm{\alpha }-\mathrm{Ketoglutaric} \mathrm{acid}+{\mathrm{CO}}_2$

The correct combination is: