Question

Enzymes required for photophosphorylation are located in ............ of chloroplast.

• A. Peristromium
• B. Plastidome
• C. Stroma
• D. Quantasome

Answer 1

The correct option is D Quantasome

A) The peristomium is the first true body segment in an annelid worm's body in the anterior end.

B) Plastid or plastidome refers to the entire unit where photosynthesis takes place.

C) Enzymes that are responsible for photophosphorylation are not present in the stroma.

D) Quantasomes are particles found in the thylakoid membrane of chloroplasts in which photosynthesis takes place. They are embedded in the surface of thylakoid discs in chloroplasts. They are composed of lipids and proteins that include various photosynthetic pigments and redox carriers. For this reason, they are considered to be photosynthetic units. They occur in 2 sizes: the smaller quantasome is thought to represent the site of photosystem I, the larger to represent the site of photosystem II which are involved in photophosphorylation.

So the correct answer is 'Quantasome'.