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?
a. Splitting of water
b. Moving electrons through photosystems
c. Reduction of NADP
d. Q cycle

What does chemiosmosis require?

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?
a. Catabolic
b. Biosynthetic phase
c. amphibolic
d. Hydrolytic phase

Dark reaction depends upon-
a. Presence of darkness
b. Presence of light
c. Products of light reactions
d. Products of biosynthetic phase

The first dark reaction or CO2 fixation product is-
a. 3C – Organic Acid
b. 6C – Organic Acid
c. 5C – Organic Acid
d. 1C – Organic Acid

Melvin-Calvin used ------- radioactive in-----studies for the discovery of first CO2 fixation product.
a. 14C , Fungal photosynthesis
b. 14C , Algal photosynthesis
c. 15N , Fungal photosynthesis
d. 15N , Algal photosynthesis

The first product of C3 and C4 cycle are:
a. PGA, PGAL
b. PGA, OAA
c. PGAL, RuBP
d. PGAL, OAA