Selected MCQ

Current Question
Which part controls breathing?
  • A. Brainstem
  • B. Cerebrum
  • C. Heart
  • D. Lung
Correct Answer: A
Explanation:
Brainstem regulates respiration.
Related Question 1
Which hormone controls metabolism rate?
  • A. Insulin
  • B. Thyroxine
  • C. Adrenaline
  • D. Estrogen
Correct Answer: B
Explanation:
Thyroxine regulates metabolic rate.
Related Question 2
The partition function (Z) is related to Helmholtz free energy (F) by:
  • A. (F = kT \ln Z)
  • B. (F = -kT \ln Z)
  • C. (F = Z/kT)
  • D. (F = k/Z)
Correct Answer: B
Explanation:
Helmholtz free energy derives from partition function logarithm.
Related Question 3
Which force acts on charged particles?
  • A. Gravitational
  • B. Magnetic
  • C. Electric
  • D. Nuclear
Correct Answer: C
Explanation:
Electric force acts on charges.
Related Question 4
Which bond has partial ionic character?
  • A. Nonpolar covalent
  • B. Polar covalent
  • C. Metallic
  • D. Hydrogen
Correct Answer: B
Explanation:
Polar covalent bonds share electrons unequally.
Related Question 5
Which structure controls gene expression?
  • A. DNA
  • B. RNA
  • C. Protein
  • D. All
Correct Answer: D
Explanation:
Regulation involves DNA, RNA, and proteins.