(A) Vitamin B
(B) Vitamin K
(C) Vitamin A
(D) Vitamin E
Answer: (C) Vitamin A
Category: Biology MCQs
Closing and opening of Stomata in plants is regulated by:
(A) Sulphur
(B) Phosphorus
(C) Potassium
(D) Calcium
Answer: (C) Potassium
How many molecules of CO2 are produced when Kreb’s cycle operates twice?
(A) 1
(B) 2
(C) 3
(D) 6
Answer: (B) 2
A substrate where enzyme acts during catalysis is called:
(A) Active site
(B) Binding site
(C) Functional site
(D) Catalytic site
Answer: (A) Active site
Which of the following is the function of Meiosis?
(A) Development and growth
(B) Cell replacement
(C) Gametes production
(D) Asexual reproduction
Answer: (C) Gametes production