What is the role of NAD+ in cellular respiration?
1. It functions as an enzyme
2. It functions as an electron carrier
3. It is a nucleotide source for ATP synthesis
4. It is the final electron acceptor for anaerobic respiration
Subtopic:  Aerobic Respiration |
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Which of these statements is incorrect?
1. Enzymes of the TCA cycle are present in the mitochondrial matrix.
2. Glycolysis occurs in the cytosol.
3. Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms.
4. Oxidative phosphorylation takes place in the outer mitochondrial membrane.
Subtopic:  Oxidative Phosphorylation |
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Which statement is wrong for Krebs' cycle?

1. There is one point in the cycle where FAD+ is reduced to FADH.
2. During conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesized.
3. The cycle starts with condensation of acetyl group (acetyl CoA) with pyruvic acid to yield citric acid.
4. There are three points in the cycle where NAD+ is reduced to NADH + H+.

Subtopic:  Kreb's Cycle |
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Which of the following biomolecules is common to respiration-mediated breakdown of fats, carbohydrates and proteins?

1. Glucose-6-phosphate
2. Fructose 1, 6-bisphosphate
3. Pyruvic acid
4. Acetyl Co-A
Subtopic:  THE RESPIRATORY BALANCE SHEET |
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Oxidative phosphorylation is

1. formation of ATP by transfer of phosphate group from a substrate to ADP
2. oxidation of phosphate group in ATP
3. addition of phosphate group to ATP
4. formation of ATP by energy released from electrons removed during substrate oxidation

Subtopic:  Oxidative Phosphorylation |
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