How many ATPs are produced by substrate-level phosphorylation in aerobic and anaerobic respiration, respectively, if one molecule of glucose is used?
1. 6, 4
2. 4, 6
3. 4, 4
4. 6, 6

Subtopic:  Glycolysis | Aerobic Respiration |
 63%
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How many 5C compounds are formed during Kreb's cycle, if three pyruvate molecules enter into mitochondria?
1. 5
2. 10
3. 6
4. 3
Subtopic:  Kreb's Cycle |
 74%
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If the inner mitochondrial membrane is denatured by a poison, which of the following processes will not be affected?
1. Lactic acid fermentation
2. Electron transport system
3. Kreb's cycle
4. Oxidative decarboxylation of pyruvate
Subtopic:  ETS |
 62%
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In case of severe copper deficiency in plants, which of the following complexes of ETS will not be formed?
1. Complex I
2. Complex II
3. Complex III
4. Complex IV
Subtopic:  ETS |
 77%
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The proton gradient across the mitochondrial membrane is a result of
1. Energy of oxidation-reduction
2. Chemiosmosis
3. Flow of H+ via F0 particle
4. Production of GTP in the mitochondrial matrix
Subtopic:  Oxidative Phosphorylation |
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If hemoglobin and palmitic acid are catabolized for aerobic respiration they can enter the respiratory pathway at which of the following stages?
1. Glycolysis
2. Krebs cycle
3. Oxidative phosphorylation
4. ETS
Subtopic:  Amphibolic Nature of Respiration |
 66%
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In which of the following cases, RQ will be infinite?
1. Protein undergoing aerobic respiration
2. Carbohydrates undergoing anaerobic respiration
3. Fats undergoing cellular respiration through oxidation decarboxylation
4. Organic acids undergoing cellular respiration by complete oxidation

 
Subtopic:  Respiratory Quotient |
 62%
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Which of the following is a mobile electron carrier between complex III and IV in the ETS of mitochondria?
1. Ubiquinone
2. Cytochrome c
3. Cytochrome a
4. Cytochrome a3
Subtopic:  ETS |
 84%
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Mark the incorrect statement about aerobic respiration.
 
1. Most common in higher organisms
2. It involves the complete oxidation of organic substances
3. Does not take place in prokaryotes
4. Glycolysis is the first step of aerobic respiration and it does not involve the release of CO2.

 
Subtopic:  Introduction |
 55%
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Select the incorrect option about pyruvate dehydrogenase enzyme
1. Requires Mg+2 as a cofactor
2. Requires NAD+ as a coenzyme
3. Converts pyruvic acid to acetyl CoA
4. Converts pyruvic acid to acetaldehyde
Subtopic:  Aerobic Respiration |
 76%
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