Q. No.In the Z-scheme of light reaction, at how many positions an electron is excited by the light?
1. 1
2. 2
3. 3
4. 4
1. 1
2. 2
3. 3
4. 4
Spliting of water is associated with-
| 1. | PS II |
| 2. | PS I |
| 3. | PS I AND PS II |
| 4. | outer membrane of thylakoid. |
Which of the following statement is incorrect?
| 1. | Electrons to PS-I are provided by PS-II |
| 2. | Electrons to PS-II are provided by the splitting of water |
| 3. | Electrons to PS-I are provided by the splitting of water |
| 4. | PS-II is physically located on the inner side of the membrane of the thylakoid. |
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.
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