At how many points in the TCA cycle is ${\mathrm{NAD}}^{+}$ reduced to NADH + ${\mathrm{H}}^{+}$?

1.	2	2.	3
3.	4	4.	6

During the conversion of succinyl CoA to succinic acid in TCA cycle:
1. One molecule of ATP is directly synthesized
2. ${\mathrm{NAD}}^{+}$ is reduced
3. FAD is reduced
4. One molecule of GTP is synthesized

The electron transport system in mitochondria is located in the:
1. Inner mitochondrial membrane
2. Outer mitochondrial membrane
3. Inter membrane space
4. Matrix

Ubiquinone receives reducing equivalents via:

Cytochrome c is found:

The number of ATP molecules synthesized from oxidation of one molecule of NADH and one molecule of ${\mathrm{FADH}}_2$ are respectively:

Oxygen drives the process of ATP production via ETS. The best explanation for this would be that oxygen:
1. is needed at the end of the aerobic respiration
2. is the terminal electron donor
3. is not required in the glycolytic pathway
4. acts as the final hydrogen acceptor

For each ATP produced, what is the number of ${\mathrm{H}}^{+}$ that passes through F0 from the intermembrane space to the matrix down the electrochemical proton gradient?
1. 1
2. 2
3. 3
4. 4

According to NCERT textbook, what is the number of ATP molecules that can be regarded as a net gain during aerobic respiration of one molecule of glucose?

What is the number of ATP molecules produced when pyruvate is converted to lactate by fermentation?