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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