This quiz works best with JavaScript enabled. Home > Biology > Molecular Biology – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 9 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The enzyme that unwinds the DNA to prepare for replication A) Helicase. B) Replicase. C) Polymerase. D) Synthase. Show Answer Correct Answer: A) Helicase. 2. What applications can gel electrophoresis be used for? A) Parental Testing. B) Criminal Investigations. C) Sequence Endangered Species DNA. D) All of the above. Show Answer Correct Answer: D) All of the above. 3. Carbohydrates give us..... A) Calcium. B) Energy. C) Vitamins. D) Strenght. Show Answer Correct Answer: B) Energy. 4. What is survival of the fittest? A) The competition between organism with same species and morphology. B) Survival of organism in certain area. C) Individuals with variations that are better adapted will be more likely to survive than those without. D) Characteristics that will be passed to the offspring. Show Answer Correct Answer: C) Individuals with variations that are better adapted will be more likely to survive than those without. 5. Which scientist(s) said that adenine and guanine equals thymine and cytosine A) Franklin & Watkins. B) Chargaff. C) Griffith. D) Hershey & Chase. Show Answer Correct Answer: B) Chargaff. 6. This produces cells for growth and repair. A) Mitosis. B) Meiosis. C) Lipids. D) Proteins. Show Answer Correct Answer: A) Mitosis. 7. MRNA is A) Used as a template to make protein. B) Part of a ribosome. C) A small molecule used by the ribosome and is not made into protein. D) All of the above. Show Answer Correct Answer: A) Used as a template to make protein. 8. Gene occupies a specific position called A) Histones. B) Vacuole. C) Orbit. D) Locus. Show Answer Correct Answer: D) Locus. 9. True or False: in translation, the language of the information is changed A) True. B) False. C) It depends. D) None of above. Show Answer Correct Answer: A) True. 10. The genetic code consists of ..... letter words. A) One. B) Two. C) Three. D) Four. Show Answer Correct Answer: C) Three. 11. At what point in the cell cycle does DNA replication occur and why? A) Before a cell divides, to provide each of the two resulting cells with a complete set of DNA instructions. B) Before a cell divides, to ensure that DNA will fit into the resulting cells. C) During cell division, to ensure that the DNA will fit into the resulting new cells. D) After a cell divides, to provide each of the resulting new cells with a complete set of DNA instructions. Show Answer Correct Answer: A) Before a cell divides, to provide each of the two resulting cells with a complete set of DNA instructions. 12. Number of hydrogen bonds between adenine and thymine? A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 13. G-protein coupled receptors (GPCRs) have ..... transmembrane domains and are associated with an intracellular G-protein A) Five. B) Seven. C) Nine. D) None of above. Show Answer Correct Answer: B) Seven. 14. Ubiquitin is about ..... amino acid long A) 72. B) 74. C) 76. D) None of above. Show Answer Correct Answer: C) 76. 15. If energy is needed to move materials into or out of a cell, what is most likely occurring? A) Active transport. B) Passive transport. C) Osmosis. D) Diffusion. Show Answer Correct Answer: A) Active transport. 16. How do diets high in fat affect the body? A) Fat provides needed nutrients to help respiration. B) Fat supplies a majority of energy for life processes. C) Fat clogs blood vessels and reduces the flow of oxygen. D) None of above. Show Answer Correct Answer: C) Fat clogs blood vessels and reduces the flow of oxygen. 17. Would a mutation in the DNA of a skin cell be passed on to an organism's offspring? A) Yes, because any change to the DNA is passed on to the offspring. B) Maybe. Sex cells only use half of the body's genetic code. It might get the copy of a gene that wasn't mutated. C) No. Only mutations that occur in the gametes (sex cells) are passed on to the offspring. D) Without knowing the animal, it would be hard to tell whether or not the mutation would be passed on. Show Answer Correct Answer: C) No. Only mutations that occur in the gametes (sex cells) are passed on to the offspring. 18. Restriction enzymes were discovered by A) Alexander Fleming. B) Smith and Nathans. C) Berg. D) None. Show Answer Correct Answer: B) Smith and Nathans. 19. What is the process in which an unspecialized stem cell turns into a specialized body cell? A) DNA Replication. B) Differentiation. C) Respiration. D) Genetic Modification. Show Answer Correct Answer: B) Differentiation. 20. Which of the following is directly involved in the transportation of materials inside/within the cell? A) Endoplasmic Reticulum. B) Vacuole. C) Lysosome. D) Mitochondria. Show Answer Correct Answer: A) Endoplasmic Reticulum. ← PreviousNext →Related QuizzesMolecular Biology Quiz 1Molecular Biology Quiz 2Molecular Biology Quiz 3Molecular Biology Quiz 4Molecular Biology Quiz 5Molecular Biology Quiz 6Molecular Biology Quiz 7Molecular Biology Quiz 8Molecular Biology Quiz 10Molecular Biology Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books