Which of the following biomolecules is common to respiration-mediated breakdown of fats, carbohydrates and proteins?
1. | Glucose-6-phosphate |
2. | Fructose 1, 6-bisphosphate |
3. | Pyruvic acid |
4. | Acetyl Co-A |
1. | It functions as an enzyme |
2. | It functions as an electron carrier |
3. | It is a nucleotide source for ATP synthesis |
4. | It is the final electron acceptor for anaerobic respiration |
1. | Enzymes of the TCA cycle are present in the mitochondrial matrix. |
2. | Glycolysis occurs in the cytosol. |
3. | Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms. |
4. | Oxidative phosphorylation takes place in the outer mitochondrial membrane. |
Oxidative phosphorylation is
1. | formation of ATP by transfer of phosphate group from a substrate to ADP |
2. | oxidation of phosphate group in ATP |
3. | addition of phosphate group to ATP |
4. | formation of ATP by energy released from electrons removed during substrate oxidation |
Which statement is wrong for Krebs' cycle?
1. | There is one point in the cycle where FAD+ is reduced to FADH2 . |
2. | During conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesized. |
3. | The cycle starts with condensation of acetyl group (acetyl CoA) with pyruvic acid to yield citric acid. |
4. | There are three points in the cycle where NAD+ is reduced to NADH + H+. |
Which of the metabolites is common to respiration mediated breakdown of fats, carbohydrates and proteins?
1. Frutose1, 6 - bisphosphate
2. Pyruvic acid
3. Acetyl CoA
4. Glucose- 6 -phosphate
The energy-releasing metabolic process in which substrate is oxidized without an external electron acceptor is called:
1. glycolysis
2. fermentation
3. aerobic respiration
4. photorespiration
Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalyzed by:
1. Phosphofructokinase
2. Aldolase
3. Hexokinase
4. Enolase
Respiratory Quotient (RQ) value of tripalmitin is:
1. | 0.09 | 2. | 0.9 |
3. | 0.7 | 4. | 0.007 |
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. |