Q. No.The correct sequence of electron flow during aerobic respiration would be:
1. food → Krebs cycle → ATP → NAD+
2. food → NADH → electron transport chain → oxygen
3. glucose → pyruvate → ATP → oxygen
4. glucose → ATP → electron transport chain → NADH
1. food → Krebs cycle → ATP → NAD+
2. food → NADH → electron transport chain → oxygen
3. glucose → pyruvate → ATP → oxygen
4. glucose → ATP → electron transport chain → NADH
The components of the mitochondrial electron transport chain are located:
1. in mitochondrial matrix
2. in outer mitochondrial membrane
3. in inner mitochondrial membrane
4. in intermembrane space
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The correct sequence of flow of electrons downhill in the mitochondrial electron transport chain would be:
1. ubiquinone, cytochromes, FMN, Fe-S
2. cytochromes, FMN, ubiquinone, Fe-S
3. Fe-S, FMN, cytochromes, ubiquinone
4. FMN, Fe-S, ubiquinone, cytochromes
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Electron is donated to the mitochondrial ETC at the lowest energy level by:
| 1. | Glucose | 2. | NADH |
| 3. | ATP | 4. | FADH2 |
The source of oxygen for the synthesis of water in oxidative phosphorylation is:
1. carbon dioxide
2. glucose
3. molecular oxygen
4. pyruvate
When electron pass downhill in the ETC, the energy released is used to pump protons into:
1. matrix of mitochondria
2. cytosol
3. mitochondrial inner membrane
4. mitochondrial intermembrane space
ATP synthesis during oxidative phosphorylation in mitochondria is directly driven by:
1. oxidation of glucose.
2. electron transport downhill in the ETC.
3. terminal transfer of electrons to oxygen.
4. chemiosmosis.
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ATP synthase is located in the mitochondrial:
| 1. | matrix | 2. | electron transport chain |
| 3. | outer membrane | 4. | inner membrane |
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Isolated inner membrane of mitochondria can carry out:
1. the citric acid cycle
2. oxidative phosphorylation
3. glycolysis and fermentation
4. reduction of
The number of oxygen molecules required each time a molecule of glucose is completely oxidized via aerobic respiration is:
| 1. | 1 | 2. | 2 |
| 3. | 6 | 4. | 12 |
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