How many ATP molecules are utilized to form 10 molecules of fructose-6-phosphate in glycolysis? (Glucose is considered to be the respiratory substrate.)
1. 10
2. 5
3. 20
4. 50

Subtopic:  Glycolysis |
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During fermentation, how much energy present in glucose is released?
1. Less than 7%
2. 15-18%
3. 10%
4. 74%
Subtopic:  Fermentation |
 94%
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At which of the following alcohol concentrations do yeasts poison themselves to death during fermentation?
1. 5-7% of ethanol
2. 2-5% of methanol
3. Over 15% of methanol
4. About 13% of ethanol
Subtopic:  Fermentation |
 88%
From NCERT
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How many times oxidative decarboxylation takes place during the complete oxidation of one molecule of pyruvate in aerobic respiration?
1. 1
2. 2
3. 3
4. 4
Subtopic:  Kreb's Cycle |
From NCERT
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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%
From NCERT
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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%
From NCERT
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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%
From NCERT
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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%
From NCERT
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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 |
From NCERT
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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%
From NCERT
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