Q. No.
Where does cyclic photo-phosphorylation takes place?
| 1. | membranous system of chloroplast |
| 2. | stroma lamellae |
| 3. | grana |
| 4. | stroma |
Synthesis of ATP from ADP and inorganic phosphate in the presence of light is known as-
a. phosphorylation
b. photo-phosphorylation
c. photorespiration
d. photooxidation.
Which of the following statement is correct?
| 1. | H2S is the hydrogen donor for purple and green sulphur bacteria. |
| 2. | H2O is the hydrogen donor for purple and green sulphur bacteria. |
| 3. | Oxygen is evolved by the purple and green sulphur bacteria. |
| 4. | Oxygen evolved by the green plants comes from CO2. |
ATP synthesis is linked to-
| 1. | Development of electron gradient |
| 2. | Development of atomic gradient |
| 3. | Development of proton gradient |
| 4. | Flow of electrons across the membrane |
What does not cause the proton gradient across the membrane?
| 1. | Splitting of water |
| 2. | Moving electrons through photosystems |
| 3. | Reduction of NADP |
| 4. | Q cycle |
What does chemiosmosis require?
| 1. | membrane, cytosol, proton pump, ATPase, and proton gradient |
| 2. | membrane, cytosol, proton pump, and H-ions |
| 3. | membrane, protonpump, ATPase and proton gradient |
| 4. | membrane, cytosol, proton pump, ATPase and proton gradient, and H-ions |
Which enzyme catalyzes the reaction of ATP formation during chemiosmosis?
a. ATP hydrolase
b. ATP synthase
c. ATPase
d. ATP synthetase
ATP and NADPH produced during photosynthesis, are used in which of the following reactions?
1. Catabolic
2. Biosynthetic phase
3. amphibolic
4. Hydrolytic phase
Dark reaction depends upon-
a. Presence of darkness
b. Presence of light
c. Products of light reactions
d. Products of biosynthetic phase
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