Q. No.Where are the protons and oxygen produced by the splitting of water likely to be released?
1.
in the lumen of thylakoid
2.
on the outer side of the membrane
3.
Both a and b
4.
used up in the light reaction
In plant cells ATP is synthesised in-
| 1. | mitochondria |
| 2. | chloroplast |
| 3. | mitochondria and chloroplast |
| 4. | in mitochondria during day and in chloroplasts during night. |
Where does cyclic photo-phosphorylation takes place?
| 1. | membranous system of chloroplast |
| 2. | stroma lamellae |
| 3. | grana |
| 4. | stroma |
Which of the following is present in membrane of stroma lamellae?
a. NADP reductase
b. PS-I
c. PS-II
d. water splitting complex.
If only light of wavelength beyond 680 nm is available then which process will remain continue?
a. cyclic photo-phosphorylation
b. non-cyclic photo-phosphorylation
c. ATP and NADPH
d. evolution of oxygen
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. |
The mechanism of ATP synthesis is explained by
a. Chemiosmotic Hypothesis
b. Photophosphorylation
c. Electron Transport Chain
d. Splitting of Water
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 |
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