Q. No.In photosystem-I, P700 refers to-
1. chl-b
2. chl-a
3. number of pigment molecules
4. absorption peak of chl-a at 700nm.
1. chl-b
2. chl-a
3. number of pigment molecules
4. absorption peak of chl-a at 700nm.
Light harvesting complexes are made up of-
1. proteins
2. pigments
3. protein and pigments
4. proteins and lipids.
In chloroplast the movement of electrons from PS-II to electron transport system is-
1. uphill in terms of redox potential scale.
2. downhill in terms of redox potential scale.
3. from one cytochrome to another
4. None of the above.
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
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. |
In plant cells ATP is synthesised in-
a. mitochondria
b. chloroplast
c. mitochondria and chloroplast
d. in mitochondria during day and in chloroplasts during night.
Where does cyclic photo-phosphorylation takes place?
a. membranous system of chloroplast
b. stroma lamellae
c. grana
d. 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.
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