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Q. No.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
I: final acceptor of electrons
II: final acceptor of protons
Subtopic: ETS |
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From NCERT
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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 |
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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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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 |
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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 |
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Consider the two statements:
| Statement I: | Inside a cell, the glucose molecule is oxidised not in one step but in several small steps. |
| Statement II: | Some steps will be just large enough such that energy liberated can be coupled to ATP synthesis. |
| 1. | Both Statement I and Statement II are correct and Statement II explains Statement I |
| 2. | Both Statement I and Statement II are correct but Statement II does not explain Statement I |
| 3. | Statement I is correct but Statement II is incorrect |
| 4. | Statement I is incorrect but Statement II is correct |
Subtopic: Introduction |
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From NCERT
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The number of metabolic steps in EMP pathway where glucose undergoes partial oxidation to form two molecules of pyruvic acid is:
| 1. 8 | 2. 9 |
| 3. 10 | 4. 11 |
Subtopic: Glycolysis |
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In glycolysis, ATP is synthesised:
| 1. | during conversion of 1,3 biphosphoglyceric acid to 3-phosphoglyceric acid and during conversion of phosphoenolpuruvate to pyruvic acid |
| 2. | during conversion of glucose to glucose-6-phospate and during conversion of fructose-6-phosphate to fructose – 1,6- biphosphate |
| 3. | during conversion of glucose to glucose-6-phospate and during conversion of glucose-6-phosphate to fructose-6- phosphate |
| 4. | during conversion of 3-phosphoglyceric acid to 2-phosphoglycerate and during conversion of 2-phosphoglycerate to phosphoenolpuruvate |
Subtopic: Glycolysis |
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Subtopic: Glycolysis |
79%
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