Selected MCQ

Current Question
Which biomolecule stores energy long term?
  • A. Protein
  • B. Lipid
  • C. Carbohydrate
  • D. Nucleic acid
Correct Answer: B
Explanation:
Lipids store long-term energy.
Related Question 1
Which biomolecule directly stores hereditary information in most organisms?
  • A. Protein
  • B. DNA
  • C. Lipid
  • D. Polysaccharide
Correct Answer: B
Explanation:
DNA encodes genetic information in nucleotide sequence.
Related Question 2
Which process removes CO₂ from atmosphere long-term?
  • A. Photosynthesis
  • B. Respiration
  • C. Ocean dissolution
  • D. Silicate weathering
Correct Answer: D
Explanation:
Weathering locks carbon in rocks.
Related Question 3
Which energy source is sustainable?
  • A. Coal
  • B. Oil
  • C. Solar
  • D. Gas
Correct Answer: C
Explanation:
Solar is sustainable.
Related Question 4
Which energy is motion?
  • A. Potential
  • B. Thermal
  • C. Kinetic
  • D. Chemical
Correct Answer: C
Explanation:
Motion defines kinetic energy.
Related Question 5
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.