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Q. No.Pyruvate dehydrogenase activity during aerobic respiration requires:
1.
Calcium
2.
Iron
3.
Cobalt
4.
Magnesium
Subtopic: Aerobic Respiration |
84%
From NCERT
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In the citric acid cycle:
| 1. | oxygen is used to oxidise the acetyl group carbons of acetyl-CoA in the citric acid cycle. |
| 2. | three molecules of NADH and one molecule of FADH2 are produced in one turn. |
| 3. | oxygen is not used, so the cycle can occur in anaerobic conditions. |
| 4. | water is formed during the complete oxidation of glucose. |
Subtopic: Kreb's Cycle |
78%
From NCERT
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With respect to the steps of glycolysis at which utilization or synthesis of ATP or NADH takes place, Identify the incorrect match:
|
1. |
Production of ATP |
BPGA to 3-PGA |
|
2. |
Utilization of ATP |
Fructose-6-phosphate to Fructose-1,6-biphosphate |
|
3. |
Production of NADH |
PGAL to BPGA |
|
4. |
Utilization of NADH |
3-PGA to 2-PGA |
Subtopic: Glycolysis |
55%
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Identify the correct statements regarding the mitochondrial electron transport system.
| I: | Electrons from NADH in mitochondrial matrix are first transferred to [Fe-S] and then to FMN in complex I. |
| II: | Complex II is not a proton pump. |
| III: | Cytochrome c is located on the outer surface of the inner membrane. |
| IV: | Ubiquinone, located within the inner mitochondrial membrane, is oxidized with the transfer of electrons to cytochrome c via complex III. |
| 1. | Only II and III | 2. | Only II, III and IV |
| 3. | Only IV | 4. | Only I and III |
Subtopic: ETS |
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When oxygen is not available to a cell, NADH formed during glycolysis:
| 1. | does not undergo any change as there is no need for the cell to regenerate NAD+ |
| 2. | passes electrons to the electron transport system |
| 3. | passes hydrogen atoms to pyruvic acid |
| 4. | passes electrons and hydrogen atoms to acetyl coA |
Subtopic: Fermentation |
From NCERT
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In the electron transport system in the mitochondria, oxygen acts as a:
I: final acceptor of electrons
II: final acceptor of protons
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: ETS |
52%
From NCERT
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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 |
70%
From NCERT
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The respiratory quotient:
| I: | is the ratio of the volume of carbon dioxide evolved to the volume of oxygen evolved |
| II: | is 1, if carbohydrates are used as respiratory substrates and are completely oxidized |
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect |
Subtopic: Respiratory Quotient |
From NCERT
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Consider the two statements:
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
| I: | ATP is used as the energy currency of the cell. |
| II: | ATP molecule has two high energy bonds. |
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
Subtopic: Introduction |
From NCERT
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Cellular respiration includes:
| I: | Transport of gases from the respiratory surface to the cells |
| II: | Breakdown of food material within the cell to release energy |
| III: | Trapping of energy released during the breakdown of food material within the cell for synthesis of ATP |
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
Subtopic: Aerobic Respiration |
52%
From NCERT
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