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MOLECULAR BIOLOGY MCQs

Total Questions : 32 | Page 2 of 4 pages
Question 11. Proteins are provided by
  1.    dried beans, peas, and nuts
  2.    milk and eggs
  3.    meat, fish, and poultry
  4.    All choices are correct
 Discuss Question
Answer: Option D. -> All choices are correct
Question 12. Which best describes the nutrients that are sources of energy for the body?
  1.    fats and proteins
  2.    fats and carbohydrates
  3.    water and carbohydrates
  4.    Calcium and fiber
 Discuss Question
Answer: Option B. -> fats and carbohydrates
Question 13. What are three parts of a DNA nucleotide?
  1.    Phosphate group
  2.    Sugar
  3.    Nitrogenous base
  4.    All of above
 Discuss Question
Answer: Option D. -> All of above
Question 14. What enzyme is responsible for transcription?
  1.    DNA polymerase
  2.    RNA polymerase
  3.    ribosomes
  4.    nucleolus in the nucleus
 Discuss Question
Answer: Option B. -> RNA polymerase
Question 15. Where does transcription take place in a cell?
  1.    always in the nucleus
  2.    always in the cytoplasm
  3.    in the nucleus in eukaryotes and the cytoplasm in prokaryotes
  4.    in the cytoplasm in eukaryotes and the nucleus in prokaryotes
 Discuss Question
Answer: Option C. -> in the nucleus in eukaryotes and the cytoplasm in prokaryotes
Question 16. What does DNA polymerase do?
  1.    connects sugars and phosphates with weak hydrogen bonds
  2.    connects sugars and phosphates with strong covalent bonds
  3.    connects bases with strong hydrogen bonds
  4.    connects bases with strong covalent bonds
 Discuss Question
Answer: Option B. -> connects sugars and phosphates with strong covalent bonds
Question 17. What are the 2 functions of DNA polymerase?
  1.    makes DNA and RNA
  2.    makes DNA and protein
  3.    makes DNA and fixes its mistakes
  4.    makes RNA and protein
 Discuss Question
Answer: Option C. -> makes DNA and fixes its mistakes
Question 18. What are three types of mutagens
  1.    Radiation
  2.    Chemicals
  3.    Infectious agents
  4.    All of above
 Discuss Question
Answer: Option D. -> All of above
Question 19. What are three types of point mutations
  1.    Silent
  2.    Missense
  3.    Nonsense
  4.    All of above
 Discuss Question
Answer: Option D. -> All of above
Question 20. What type of respiration requires oxygen?
  1.    Aerobic
  2.    Anaerobic
 Discuss Question
Answer: Option A. -> Aerobic

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