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Q. No.During oxidation within a cell, all the energy contained in respiratory substrates:
1.
is released free into the cell
2.
is released in a single step
3.
is released in a series of slow stepwise reactions
4.
gets converted to usable energy
Subtopic: Aerobic Respiration |
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Level 1: 80%+
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In glycolysis, which of the following conversions is an energy yielding process?
1. Glucose to Glucose-6-phosphate
2. Fructose-6-phosphate to Fructose 1,6- biphopshate
3. BPGA to 3-phosphoglyceric acid
4. 3-phosphoglyceric acid to 2-phosphoglycerate
1. Glucose to Glucose-6-phosphate
2. Fructose-6-phosphate to Fructose 1,6- biphopshate
3. BPGA to 3-phosphoglyceric acid
4. 3-phosphoglyceric acid to 2-phosphoglycerate
Subtopic: Glycolysis |
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Level 2: 60%+
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The names for Complex III and Complex IV in the mitochondrial electron transport chain respectively are:
| 1. | NADH dehydrogenase and Succinic dehydrogenase |
| 2. | NADH dehydrogenase and ATP synthase |
| 3. | Cytochrome bc1 and Cytochrome c oxidase |
| 4. | Cytochrome bc1 and Cytochrome b6f |
Subtopic: ETS |
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Level 1: 80%+
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What is incorrect about CF0 part of ATP synthase?
| 1. | It is embedded in the thylakoid membrane |
| 2. | It forms a transmembrane channel |
| 3. | It carries out facilitated diffusion of protons |
| 4. | It protrudes on the outer surface of the thylakoid membrane on the side that faces the stroma |
Subtopic: Oxidative Phosphorylation |
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Level 2: 60%+
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The ratio of the volume of CO2 evolved to the volume of O2 consumed in respiration is called as the respiratory quotient [RQ]. Calculate RQ when albumin is used as a respiratory substrate[see the given equation]:
C77H112N2O22S + 77O2 → 63 CO2 + 38 H2O + SO2 + 9 CO(NH2)2
C77H112N2O22S + 77O2 → 63 CO2 + 38 H2O + SO2 + 9 CO(NH2)2
| 1. | 0.70 | 2. | 0.82 |
| 3. | 0.90 | 4. | 1.00 |
Subtopic: Respiratory Quotient |
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In the tricarboxylic acid cycle, what are the respective numbers for – decarboxylation steps, substrate level phosphorylation and points at which FADH2 is produced [calculate for oxidation of one molecule of pyruvic acid]?
| 1. | 3, 2 and 1 | 2. | 2, 1 and 1 |
| 3. | 3, 1 and 2 | 4. | 2, 2 and 2 |
Subtopic: Kreb's Cycle |
74%
Level 2: 60%+
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During glycolysis in plant cells, the enzyme hexokinase catalyzes the phosphorylation of:
| I: | Glucose |
| II: | Fructose |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: Glycolysis |
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Level 3: 35%-60%
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The number of carbon atoms in all the following molecules is 4 except in:
| 1. | α ketoglutaric acid | 2. | Oxaloacetic acid |
| 3. | Succinic acid | 4. | Malic acid |
Subtopic: Kreb's Cycle |
84%
Level 1: 80%+
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An energy yielding step in glycolysis is:
| 1. | phosphorylation of glucose |
| 2. | splitting of fructose 1,6-biphosphate |
| 3. | phosphorylation of fructose-6-phosphate |
| 4. | conversion of BPGA to 3-phosphoglyceric acid |
Subtopic: Glycolysis |
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Level 1: 80%+
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In the mitochondrial electron transport system, ubiquinone receives reducing equivalents via:
1. Both Complex I and Complex II
2. Complex III
3. Complex IV
4. Complex V
1. Both Complex I and Complex II
2. Complex III
3. Complex IV
4. Complex V
Subtopic: ETS |
85%
Level 1: 80%+
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