Biology MCQs
Biology MCQs cover cell biology, botany, zoology, genetics, microbiology, and physiology. Ideal for MDCAT, CSS, PMS, FPSC, and PPSC exams, they boost conceptual clarity and analytical skills for academic and competitive success.
Q: Which vitamin is essential for blood clotting?
A) Vitamin D
B) Vitamin A
C) Vitamin K
D) Vitamin C
✅ Correct Answer: C
Explanation: Vitamin K is needed for the synthesis of clotting proteins.
Q: Which gland regulates metabolism?
A) Pituitary
B) Pancreas
C) Adrenal
D) Thyroid
✅ Correct Answer: D
Explanation: The thyroid gland controls metabolism via hormone release.
Q: What is the function of ribosomes?
A) Store DNA
B) Digest food
C) Produce ATP
D) Synthesize proteins
✅ Correct Answer: D
Explanation: Ribosomes are responsible for protein synthesis.
Q: Which structure controls the movement of substances in and out of a cell?
A) Cell wall
B) Nucleus
C) Cell membrane
D) Cytoplasm
✅ Correct Answer: C
Explanation: The cell membrane regulates material movement.
Q: Where does photosynthesis take place?
A) Chloroplast
B) Mitochondria
C) Vacuole
D) Ribosome
✅ Correct Answer: A
Explanation: Chloroplasts contain chlorophyll needed for photosynthesis.