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: What process converts glucose into energy in cells?
A) Photosynthesis
B) Diffusion
C) Respiration
D) Transpiration
✅ Correct Answer: C
Explanation: Cellular respiration breaks down glucose to release energy.
Q: What is the basic unit of life?
A) Molecule
B) Cell
C) Organ
D) Tissue
✅ Correct Answer: B
Explanation: The cell is the fundamental structural and functional unit of living organisms.
Q: What is the process by which plants make their own food?
A) Photosynthesis
B) Digestion
C) Respiration
D) Fermentation
✅ Correct Answer: A
Explanation: Photosynthesis uses sunlight to produce glucose in plants.
Q: Which blood group is known as the universal donor?
A) AB
B) O
C) B
D) A
✅ Correct Answer: B
Explanation: Blood group O can donate to any group due to lack of A and B antigens.
Q: What carries oxygen in the blood?
A) Hemoglobin
B) White cells
C) Plasma
D) Platelets
✅ Correct Answer: A
Explanation: Hemoglobin in red blood cells binds and carries oxygen.