- 1(current)
Q. No.The ultimate electron acceptor of respiration in an aerobic organism is
1. cytochrome
2. oxygen
3. hydrogen
4. glucose
Phosphorylation of glucose during glycolysis is catalysed by
1. phosphoglucomutase
2. phosphoglucoisomerase
3. hexokinase
4. phosphorylase
Pyruvic acid, the key product of glycolysis, can have many metabolic fates. Under aerobic condition, it forms
1. lactic acid
2. CO2 + H2O
3. acetyl Co-A+ CO2
4. ethanol + CO2
Electron Transport System (ETS) is located in mitochondrial
1. outer membrane
2. inter membrane space
3. inner membrane
4. matrix
Which of the following exhibits the highest rate of respiration?
1. Growing shoot apex
2. Germinating seed
3. Roottip
4. Leaf bud
Mitochondria are called powerhouses of the cell. Which of the following observations support this statement?
| 1. | Mitochondria synthesise ATP |
| 2. | Mitochondria have a double membrane |
| 3. | The enzymes of the Krebs’ cycle and the cytochromes are found in mitochondria. |
| 4. | Mitochondria are found in almost all plants and animal cells. |
Match the following columns.
|
Column I |
Column II |
|
A. Molecular oxygen B. Electron acceptor C. Pyruvate dehydrogenase D. Decarboxylation |
1. - ketoglutaric acid 2. Hydrogen acceptor 3. Cytochrome-c 4. Acetyl Co - A |
Codes
| Options: | A | B | C | D |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 3 | 4 | 2 | 1 |
| 3. | 2 | 1 | 3 | 4 |
| 4. | 4 | 3 | 1 | 2 |
Apples are generally wrapped in waxed paper to
| 1. | prevent sunlight for changing its colour |
| 2. | prevent aerobic respiration by checking the entry of oxygen |
| 3. | prevent ethylene formation due to injury |
| 4. | makes the apples look attractive |
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Q. No.
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