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. |
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 |
1. | 0.7 | 2. | 0.9 |
3. | 1.0 | 4. | 4.0 |
1. | 0.7 | 2. | 0.9 |
3. | 1.0 | 4. | 4.0 |
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
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 |
1. | 0.70 | 2. | 0.82 |
3. | 0.90 | 4. | 1.00 |
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 |