Photosystem II

Q.

What is the photolysis of water?

Q. Which of the following is not required for the synthesis of ATP by chemiosmosis?

1. NADPH
2. Proton gradient
3. ATP Synthase
4. Proton pump

Q. In PS II, the reaction centre is

1. P700
2. P600
3. P780
4. P680

Q. PS II occurs in

1. appressed part of granal thylakoids
2. appressed and non appressed parts of grana thylakoids
3. stroma
4. stroma thylakoids and non-appressed part of grana thylakoids

Q. The scheme of transfer of electrons starting from the PS II to the reduction of NADP+ is called

1. Z-scheme
2. non-cyclic photo-phosphorylation
3. cyclic photo-phosphorylation
4. none of the above

Q. Which of the following is not involved during cyclic photophosphorylation?

1. Fd
2. FNR
3. PQ
4. PC

Q. '680' in the P680 denotes the at which maximum absorption takes place.

1. frequency
2. wavelength
3. amplitude
4. temperature

Q.

Assertion: Protons or hydrogen ions produced by photolysis of water accumulate in the lumen of thylakoids.
Reason: Photolysis of water takes place in the inner membrane of thylakoids.

1. Both, assertion and the reason are true and the reason is the correct explanation of the assertion.

2. Both, assertion and the reason are true but the reason is not the correct explanation of the assertion.

3. The assertion is true but the reason is false.

4. Both, the assertion and the reason are false.

Q. In PS II, the reaction centre is

1. P700
2. P600
3. P680
4. P780