Selected MCQ

Current Question
Which structure controls gene expression?
  • A. DNA
  • B. RNA
  • C. Protein
  • D. All
Correct Answer: D
Explanation:
Regulation involves DNA, RNA, and proteins.
Related Question 1
Which structure contains genetic material in eukaryotes?
  • A. Ribosome
  • B. Nucleus
  • C. Golgi
  • D. Lysosome
Correct Answer: B
Explanation:
DNA is stored in nucleus.
Related Question 2
Which hormone controls metabolism rate?
  • A. Insulin
  • B. Thyroxine
  • C. Adrenaline
  • D. Estrogen
Correct Answer: B
Explanation:
Thyroxine regulates metabolic rate.
Related Question 3
Which structure forms spindle fibers?
  • A. Ribosome
  • B. Centrosome
  • C. Lysosome
  • D. Golgi
Correct Answer: B
Explanation:
Centrosomes organize spindle.
Related Question 4
In general relativity, geodesics represent:
  • A. Maximum energy paths
  • B. Straightest paths in curved spacetime
  • C. Quantum trajectories
  • D. Stationary points of entropy
Correct Answer: B
Explanation:
Free-falling particles follow spacetime geodesics.
Related Question 5
Which system controls reflex?
  • A. Digestive
  • B. Nervous
  • C. Respiratory
  • D. Circulatory
Correct Answer: B
Explanation:
Nervous system handles reflexes.