Top 10 mcqs

Q1. What is the basic unit of life?

A. Tissue B. Cell C. Organ D. System

✅ Answer: B. Cell

Q2. Which molecule carries genetic information?

A. Protein B. Lipid C. DNA D. Carbohydrate

✅ Answer: C. DNA

Q3. Which enzyme is used in PCR?

A. DNA ligase B. Taq polymerase C. RNA polymerase D. Helicase

✅ Answer: B. Taq polymerase

Q4. Powerhouse of the cell is?

A. Ribosome B. Nucleus C. Mitochondria D. Lysosome

✅ Answer: C. Mitochondria

Q5. Which blood group is universal donor?

A. A B. B C. AB D. O negative

✅ Answer: D. O negative

Q6. RNA differs from DNA by?

A. Thymine B. Uracil C. Deoxyribose D. Double strand

✅ Answer: B. Uracil

Q7. Which organ purifies blood?

A. Liver B. Lung C. Kidney D. Heart

✅ Answer: C. Kidney

Q8. Which vitamin is synthesized in skin?

A. Vitamin A B. Vitamin B12 C. Vitamin C D. Vitamin D

✅ Answer: D. Vitamin D

Q9. Smallest blood cells are?

A. RBC B. WBC C. Platelets D. Plasma

✅ Answer: C. Platelets

Q10. Which gas is used in photosynthesis?

A. Oxygen B. Nitrogen C. Carbon dioxide D. Hydrogen

✅ Answer: C. Carbon dioxide