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BIOCHEMISTRY MCQs

Total Questions : 44 | Page 2 of 5 pages
Question 11. Which of the following is NOT a carbohydrate?
  1.    Lactose
  2.    Insulin
  3.    Starch
  4.    Sucrose
 Discuss Question
Answer: Option B. -> Insulin
Question 12. Water is classified as an inorganic compound because it
  1.    does not contain carbon
  2.    does not contain nitrogen
  3.    contains hydrogen
  4.    contains oxygen
 Discuss Question
Answer: Option A. -> does not contain carbon
Question 13. Which of the following is an organic compound?
  1.    H2O
  2.    C6H12O6
  3.    NH2
  4.    OH
 Discuss Question
Answer: Option B. -> C6H12O6
Question 14. To which class of organic compounds do enzymes belong?
  1.    proteins
  2.    fatty acids
  3.    nucleic acids
  4.    monosaccharides
 Discuss Question
Answer: Option A. -> proteins
Question 15. What elements make up carbohydrates?
  1.    carbon, nitrogen, hydrogen, oxygen
  2.    carbon, oxygen, phosphours
  3.    carbon, nitrogen, oxygen
  4.    carbon, hydrogen, oxygen
 Discuss Question
Answer: Option D. -> carbon, hydrogen, oxygen
Question 16. What is the function of carbohydrates in your body?
  1.    Speed up chemical reactions.
  2.    Give immediate energy.
  3.    Help to store energy.
  4.    Build cell walls in plants.
 Discuss Question
Answer: Option B. -> Give immediate energy.
Question 17. What is the ratio of hydrogen to oxygen in carbohydrates?
  1.    1:1
  2.    2:1
  3.    3:1
  4.    4:1
 Discuss Question
Answer: Option B. -> 2:1
Question 18. What is the significance of nucleic acids for cells?
  1.    They generate energy for the cell.
  2.    They restrict what enters and leaves the cell.
  3.    They support and maintain the shape of the cell.
  4.    They provide all instructions for cellular activities.
 Discuss Question
Answer: Option D. -> They provide all instructions for cellular activities.
Question 19. Which organic molecule serves as a catalyst?
  1.    lipids
  2.    proteins
  3.    nucleic acid
  4.    carbohydrates
 Discuss Question
Answer: Option B. -> proteins
Question 20. Which best explains the function of the sequence of nucleotides?
  1.    It provides energy.
  2.    It determines the shape of the DNA molecule.
  3.    It allows DNA to be successfully copied.
  4.    It carries genetic information.
 Discuss Question
Answer: Option D. -> It carries genetic information.

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