The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that Adenosine Triphosphate (ATP) is formed because
1. high energy bonds are formed in mitochondrial proteins
2. ADP is pumped out of the matrix into the intermembrane space
3. a proton gradient forms across the inner membrane
4. there is a change in the permeability of the inner mitochondrial membrane toward Adenosine Diphosphate (ADP)
Where is the respiratory electron transport system (ETS) located in plants?
1. Mitochondrial matrix
2. Outer mitochondrial membrane
3. Inner mitochondrial membrane
4. Intermembrane space
Enzymes and electron carriers for the formation of cellular energy are present in the mitochondria at
1. Outer membrane only.
2. Inner membrane only.
3. Both outer and inner membrane.
4. Mitochondrial matrix only.
Enzymes and electron carriers for the formation of
cellular energy are present in the mitochondria at
| 1. | Outer membrane only. |
| 2. | Inner membrane only. |
| 3. | Both outer and inner membrane. |
| 4. | Mitochondrial matrix only. |
Which of the following statements regarding mitochondria is incorrect?
| 1. | Mitochondrial matrix contains single circular DNA molecule and ribosomes. |
| 2. | Outer membrane is permeable to monomers of carbohydrates, fats, and proteins. |
| 3. | Enzymes of electron transport are embedded in the outer membrane. |
| 4. | Inner membrane is convoluted with infoldings. |
Respiratory Quotient (RQ) value of tripalmitin is:
| 1. | 0.09 | 2. | 0.9 |
| 3. | 0.7 | 4. | 0.007 |
Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalyzed by:
| 1. | Phosphofructokinase | 2. | Aldolase |
| 3. | Hexokinase | 4. | Enolase |
The respiratory quotient during cellular respiration would depend on the
1. Nature of enzymes involved
2. Nature of the substrate
3. Amount of carbon dioxide released
4. Amount of oxygen utilized
The three boxes in this diagram represent the three major biosynthetic pathways in aerobic respiration. Arrows represent net reactants or products.
Arrows numbered 4, 8, and 12 can all be:
| 1. | ATP | 2. | A2O |
| 3. | FAD+ or FADH2 | 4. | NADH |
Consider the following two statements:
| Statement I : | Fermentation serves an important purpose in muscle cells during exercise. |
| Statement II : | It is the only mechanism of ATP production under such conditions. |
| 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. | Both Statement I and Statement II are incorrect |