How many pigments are responsible for the color of a plant leaf?
1. 1
2. 2
3. 3
4. 4

Which of the following is present in membrane of stroma lamellae?
1. NADP reductase
2. PS-I
3. PS-II
4. water splitting complex.

The difference in development of proton gradient in photosynthesis and respiration is-
1. Photosynthesis has thylakoid membrane across which proton gradient is generated
2. Proton accumulation is inside the membrane of thylakoid.
3. both a and b
4. Mitochondrial membrane is involved

Where does the splitting of water take place?
1. Stroma
2. Cytoplasm
3. Thylakoid lumen
4. Plasma membrane

Where does exactly the NADP reductase enzyme located?
1. Thylakoid lumen
2. Thylakoid luminal side of membrane
3. Stromal side of thylakoid membrane
4. Cytoplasm

The protons for the reduction of NADP⁺ are taken from-
1. Stroma
2. Lumen of Thylakoid
3. Cytoplasm
4. Matrix

Which of the following acts as a transmembrane channel?

During chemiosmosis, the transport of proton across the membrane occurs through-
1. Active Transport
2. Facilitated Diffusion
3. Diffusion
4. both 1 and 2

Melvin Calvin used ------- radioactive in-----studies for the discovery of the first CO₂ fixation product.

What is the primary acceptor of CO₂ in dark reaction?
1. Ketose sugar
2. Aldose sugar
3. Fatty acid
4. Sucrose