Q. No.
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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To generate a proton gradient, in mitochondria, the protons are pumped:
| 1. | into the cytosol from the mitochondria |
| 2. | from the mitochondrial matrix into the intermembrane space of the mitochondria |
| 3. | from the cytosol into the matrix of the mitochondria |
| 4. | out of the nucleus and into the mitochondria |
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The pathway that normally occurs whether or not oxygen is present would be would be:
I. glycolysis
II. fermentation
III. citric acid cycle
1. Only I
2. I and II only
3. II only
4. III only
The processes that occur in the cytosol of a eukaryotic cell is/are:
I. glycolysis
II. fermentation
III. oxidation of pyruvate to acetyl CoA
| 1. | Only I | 2. | I and II only |
| 3. | I and III only | 4. | I, II, III and IV |
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Substrate-level phosphorylation is one of the ways for the formation of ATP. In this process:
1. maximum ATP are produced in higher organisms
2. a high-energy phosphate group is transferred directly to ADP
3. chemiosmosis provides energy for phosphorylation
4. the protein ATP synthase works to add phosphate to ADP
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All the following will normally occur during the electron flow in ETS in mitochondria except:
1. NADH and are oxidized.
2. the pH of the matrix decreases.
3. the electrons lose free energy.
4. an electrochemical gradient is formed.
The metabolic pathway common to aerobic respiration, anaerobic respiration and fermentation is:
1. chemiosmosis
2. the oxidation of pyruvate to acetyl CoA
3. the citric acid cycle
4. glycolysis
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