- 1(current)
Q. No.Consider the given two statements:
| Assertion (A): | During oxidation within a cell, all the energy contained in respiratory substrates is released free into the cell, in a single step. |
| Reason (R): | The energy released by oxidation in respiration is not (or rather cannot be) used directly but is used to synthesise ATP. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Respiratory Quotient | THE RESPIRATORY BALANCE SHEET |
89%
Level 1: 80%+
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How many ATP molecules are directly synthesised in the glycolytic pathway from one glucose molecule?
1. 2
2. 4
3. 10
4. 30
1. 2
2. 4
3. 10
4. 30
Subtopic: Glycolysis Regulation | Respiratory Quotient | THE RESPIRATORY BALANCE SHEET |
63%
Level 2: 60%+
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If fatty acids were to enter the respiratory pathway, they must be converted to a molecule with:
| 1. | Two carbons | 2. | Three carbons |
| 3. | Five carbons | 4. | Six carbons |
Subtopic: Aerobic Respiration | Respiratory Quotient | ETS:2 | ETS:1 | ETS |
62%
Level 2: 60%+
Hints
When proteins are respiratory substrates, the respiratory quotient is about:
| 1. | 0.7 | 2. | 0.9 |
| 3. | 1.0 | 4. | 4.0 |
Subtopic: Respiratory Quotient |
88%
Level 1: 80%+
Hints
The following equation shows the complete oxidation of tripalmitin [a fatty acid] during cellular respiration. Calculate the RQ:
\(2(C_{51}H_{98}O_6)+145O_2\longrightarrow \\102CO_2+98H_2O+\text{energy}\)
\(2(C_{51}H_{98}O_6)+145O_2\longrightarrow \\102CO_2+98H_2O+\text{energy}\)
| 1. | 0.7 | 2. | 0.9 |
| 3. | 1.0 | 4. | 4.0 |
Subtopic: Respiratory Quotient |
91%
Level 1: 80%+
Hints
The correct descending order of the RQ value, when carbohydrates, proteins and fats are used as respiratory substrate would be:
1. Protein ˃ Fats ˃ Carbohydrates
2. Protein ˃ Carbohydrates ˃ Fats
3. Carbohydrates ˃ Protein ˃ Fats
4. Fats ˃ Carbohydrates ˃ Protein
Subtopic: Respiratory Quotient |
84%
Level 1: 80%+
Hints
Consider the given two statements:
| Assertion (A): | When carbohydrates are used as respiratory substrate and are completely oxidised, the RQ will be 1. |
| Reason (R): | Equal amounts of CO2 and O2 are evolved and consumed, when carbohydrates are used as respiratory substrate and are completely oxidised. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
| 3. | (A) is True but (R) is False |
| 4. | (A) is False but (R) is True |
Subtopic: Respiratory Quotient |
95%
Level 1: 80%+
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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 |
71%
Level 2: 60%+
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The respiratory quotient:
| I: | is the ratio of the volume of carbon dioxide evolved to the volume of oxygen consumed |
| 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 |
53%
Level 3: 35%-60%
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- 1(current)
Q. No.
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