The enzyme that catalyzes the synthesis of ATP in chloroplasts is: MCQ with Answer and Explanation

The enzyme that catalyzes the synthesis of ATP in chloroplasts is:
A. ATP synthase
B. NADP reductase
C. Rubisco
D. PEP carboxylase
Answer: Option A
Solution (By JKSSB Mock Tests)
ATP synthase (CF₀-CF₁ complex) uses the proton gradient across the thylakoid membrane to synthesize ATP. Rubisco fixes CO₂, NADP reductase reduces NADP⁺, PEP carboxylase is in C4 plants.

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Biology Questions

Question #1
Consider statements about angiosperms: 1. They have enclosed seeds. 2. They exhibit double fertilization. 3. All angiosperms are trees. Which are correct?
A. 1 and 3 only
B. 1 and 2 only
C. 1, 2 and 3
D. 2 and 3 only

Correct Answer: Option B


Explanation:
Angiosperms are flowering plants where seeds are enclosed within a mature ovary (fruit). They are characterized by double fertilization, where one male gamete fuses with the egg and the other with the secondary nucleus. They exhibit immense diversity in habit, ranging from tiny aquatic Wolffia to massive trees, so not all are trees. Statements 1 and 2 are correct.

This question belongs to: Science Biology
Question #2
The lymphatic system consists of lymph, lymph nodes, and:
A. Capillaries only
B. Arteries
C. Lymphatic vessels
D. Veins

Correct Answer: Option C


Explanation:
The lymphatic system includes lymph, lymphatic capillaries, vessels, ducts, and lymphoid organs (nodes, spleen, thymus). It returns tissue fluid to the blood, absorbs fats, and defends against pathogens.

This question belongs to: Science Biology
Question #3
Identify the correct statement about the human respiratory system:
A. Inhalation is a passive process.
B. The trachea branches into two bronchioles.
C. The diaphragm relaxes during inhalation.
D. Alveoli are surrounded by capillaries for gas exchange.

Correct Answer: Option D


Explanation:
Alveoli have a rich capillary network for O₂/CO₂ exchange. Inhalation is active (diaphragm contracts), trachea divides into two bronchi (not bronchioles).

This question belongs to: Science Biology