The continued oxidation of acetyl CoA via the TCA cycle requires the continued replenishment of:

I. Oxaloacetic acid II. NAD+ III. FAD
 
1. I and II only 2. I and III only
3. II and III only 4. I, II and III

Subtopic:  Kreb's Cycle |
 65%
From NCERT
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At how many points in the TCA cycle is NAD+ reduced to NADH + H+?

1. 2 2. 3
3. 4 4. 6
Subtopic:  Kreb's Cycle |
 79%
From NCERT
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During the conversion of succinyl CoA to succinic acid in TCA cycle:
1. One molecule of ATP is directly synthesized
2. NAD+ is reduced
3. FAD is reduced
4. One molecule of GTP is synthesized

Subtopic:  Kreb's Cycle |
 80%
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The electron transport system in mitochondria is located in the:
1. Inner mitochondrial membrane
2. Outer mitochondrial membrane
3. Inter membrane space
4. Matrix

Subtopic:  Oxidative Phosphorylation | Electron Transport Inhibitors |
 85%
From NCERT
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Cytochrome c is found:

1. attached to outer surface of the inner mitochondrial membrane
2. attached to inner surface of the inner mitochondrial membrane
3. in the inter membrane space
4. in the mitochondrial matrix
Subtopic:  ETS:2 | ETS:1 | ETS |
 72%
From NCERT
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The number of ATP molecules synthesized from oxidation of one molecule of NADH and one molecule of FADH2 are respectively:

1. 3 and 2 2. 2 and 3
3. 1 and 1 4. 2 and 1
Subtopic:  ETS:2 | ETS:1 | ETS |
 92%
From NCERT
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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

Subtopic:  Oxidative Phosphorylation |
 74%
From NCERT
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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?

1. 2 2. 30
3. 36 4. 38
Subtopic:  Aerobic Respiration | ETS:2 | ETS:1 | ETS |
 69%
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What is the number of ATP molecules produced when pyruvate is converted to lactate by fermentation?

1. 0 2. 2
3. 4 4. 38
Subtopic:  Fermentation |
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If fatty acids were to enter the respiratory pathway, they must be converted to a molecule with:

1. Two carbons 2. Three carbons
3. Five carbons 4. Six carbons
Subtopic:  Aerobic Respiration | Respiratory Quotient | ETS:2 | ETS:1 | ETS |
 64%
From NCERT
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