Q. No.In ETS, complex V is
1. ATP synthase
2. NADH dehydrogenase
3. Cytochrome c oxidase
4. Cytochrome bc complex
2. NADH dehydrogenase
3. Cytochrome c oxidase
4. Cytochrome bc complex
If RQ is 0.6 in a respiratory metabolism, it would mean that
| 1. | Carbohydrates are used as respiratory material |
| 2. | Organic acids are used as respiratory substrate |
| 3. | The oxidation of the respiratory substrate consumed more oxygen than the amount of CO released |
| 4. | The oxidation of respiratory substrate consumed less oxygen than the amount of CO2 released |
The process used in conversion of Pyruvate to Acetyl CoA is
| 1. | Oxidative dehydration |
| 2. | Oxidative decarboxylation |
| 3. | Oxidative phosphorylation |
| 4. | Reductive phosphorylation. |
Fate of pyruvate produced by glycolysis depends on cellular needs, it can enter
| 1. | Lactic acid fermentation | 2. | Alcoholic fermentation |
| 3. | Aerobic respiration | 4. | All are correct |
When tripalmitin is used as substrate in respiration, the value of RQ is found to be less than one because
| 1. | It contains less number of carbon atoms than oxygen atoms. |
| 2. | The amount of CO2 evolved is more than the amount of O2 consumed. |
| 3. | The amount of O2 consumed is more than the amount of CO2 evolved. |
| 4. | The ratio of the numbers of carbon and hydrogen atoms in this molecule is not 1 : 2. |
Read the following statements and choose the option which is true for them.
| Statement-I : | During conversion of succinic acid to fumaric acid in Krebs cycle, one molecule of FAD is synthesized. |
| Statement-II : | There are three steps in the Krebs cycle where CO 2 is released. |
| 1. | Only statement I is correct. |
| 2. | Only statement II is correct. |
| 3. | Both the statements I and II are correct. |
| 4. | Both the statements I and II are incorrect. |
The first step of decarboxylation in cellular respiration is
| 1. | Conversion of PGAL to DHAP |
| 2. | Conversion of PGAL to PGA |
| 3. | Conversion of Pyruvate to Acetyl CoA |
| 4. | Conversion of BPGA to PGA |
How many molecule of NADH are produced during oxidation of one molecule of Glucose to Acetyl CoA?
| 1. | 2NADH | 2. | 4NADH |
| 3. | 3NADH | 4. | 12 NADH |
The substrate which enters in Krebs’ cycle during oxidation of Glucose is
| 1. | Pyruvate | 2. | Acetyl CoA |
| 3. | Oxaloacetate | 4. | Succinate |
Who elucidated Krebs’ cycle for the very first time?
| 1. | Frederick Kreb | 2. | Hans Kreb |
| 3. | Edward Kreb | 4. | Tilman Kreb |
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