What is the total number of NADH and molecules produced for each molecule of glucose metabolized by glycolysis and the citric acid cycle?
1. | 5 | 2. | 6 |
3. | 10 | 4. | 12 |
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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
Electron is donated to the mitochondrial ETC at the lowest energy level by:
1. | Glucose | 2. | NADH |
3. | ATP | 4. | FADH2 |
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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Let us say there are 30 NADH and 12 in a mitochondrion. What is the maximum number of ATP generated if all dinucleotides are used in chemiosmosis?
1. | 42 | 2. | 84 |
3. | 114 | 4. | 142 |
The correct chronological sequence of the stages of the glycolytic pathway is:
1. | glucose priming, cleavage and rearrangement, oxidation, ATP generation |
2. | cleavage and rearrangement, glucose priming, ATP generation, oxidation |
3. | glucose priming, oxidation, cleavage and rearrangement, ATP generation |
4. | ATP generation, oxidation, glucose priming, cleavage and rearrangement |
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Chemiosmosis is coupled to energy storage by:
1. | NADH | 2. | ADP |
3. | cytochromes | 4. | ATP synthase |
Ubiquinone is:
1. a protein in the mitochondrial electron transport chain
2. a substrate for synthesis of FADH
3. a vitamin used as coenzyme in Krebs cycle
4. a small hydrophobic coenzyme
A multienzyme complex amongst the following would be:
1. | sucrase |
2. | |
3. | hexokinase |
4. | pyruvate dehydrogenase |
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