This quiz works best with JavaScript enabled. Home > Agriculture > Biology > Molecular > Molecular Biology – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 6 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following would complement the mRNA codon for CAG (DNA) A) GUC. B) UAC. C) CAG. D) AUG. Show Answer Correct Answer: A) GUC. 2. A covalent bond that joins amino acids, at the carboxyl group of one amino acid to the amino group of the other amino acid, with the release of a molecule of water. A) Glycosidic bond. B) Ester bond. C) Ionic Bond. D) Peptide bond. Show Answer Correct Answer: D) Peptide bond. 3. Which practice will most likely decrease the chances of developing long-term illness? A) Taking an aspirin every day. B) Sleeping for five hours each night. C) Developing a regular exercise routine. D) Eating a high-fat diet. Show Answer Correct Answer: C) Developing a regular exercise routine. 4. Which statement correctly describes a way that bacteria are used in biotechnology? A) Human insulin coding bacterial genes are spliced into human cells. B) Human insulin made by bacteria is injected into humans. C) Bacteria make human cells that make insulin. D) Bacteria that make insulin are implanted in humans. Show Answer Correct Answer: B) Human insulin made by bacteria is injected into humans. 5. What kind of mutation is the result of an insertion? A) Silent Mutation. B) Frameshift mutation. C) Missense mutation. D) Nonsense mutation. Show Answer Correct Answer: B) Frameshift mutation. 6. Transcription is the process of: A) Assembling a protein from RNA. B) Making mRNA from DNA. C) "Unzipping" the molecule of DNA. D) Making DNA. Show Answer Correct Answer: B) Making mRNA from DNA. 7. Apart from proteins what else is found in the cell membrane A) Enzymes. B) High energy electrons. C) Hydrogen. D) Phospholipids. Show Answer Correct Answer: D) Phospholipids. 8. The enzyme that unwinds the DNA to prepare for replication A) Polymerase. B) Replicase. C) Helicase. D) Synthase. Show Answer Correct Answer: C) Helicase. 9. 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. 10. Carbohydrates give us..... A) Strenght. B) Vitamins. C) Energy. D) Calcium. Show Answer Correct Answer: C) Energy. 11. 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. 12. Which scientist(s) said that adenine and guanine equals thymine and cytosine A) Griffith. B) Chargaff. C) Hershey & Chase. D) Franklin & Watkins. Show Answer Correct Answer: B) Chargaff. 13. This produces cells for growth and repair. A) Proteins. B) Meiosis. C) Mitosis. D) Lipids. Show Answer Correct Answer: C) Mitosis. 14. Gene occupies a specific position called A) Locus. B) Orbit. C) Histones. D) Vacuole. Show Answer Correct Answer: A) Locus. 15. 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. 16. The genetic code consists of ..... letter words. A) Two. B) Four. C) Three. D) One. Show Answer Correct Answer: C) Three. 17. At what point in the cell cycle does DNA replication occur and why? A) Before a cell divides, to ensure that DNA will fit into the resulting cells. B) Before a cell divides, to provide each of the two resulting cells with a complete set of DNA instructions. C) After a cell divides, to provide each of the resulting new cells with a complete set of DNA instructions. D) During cell division, to ensure that the DNA will fit into the resulting new cells. Show Answer Correct Answer: B) Before a cell divides, to provide each of the two resulting cells with a complete set of DNA instructions. 18. Number of hydrogen bonds between adenine and thymine? A) 4. B) 1. C) 3. D) 2. Show Answer Correct Answer: D) 2. 19. 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. 20. Ubiquitin is about ..... amino acid long A) 72. B) 74. C) 76. D) None of above. Show Answer Correct Answer: C) 76. 21. If energy is needed to move materials into or out of a cell, what is most likely occurring? A) Osmosis. B) Diffusion. C) Active transport. D) Passive transport. Show Answer Correct Answer: C) Active transport. 22. 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. 23. 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) Without knowing the animal, it would be hard to tell whether or not the mutation would be passed on. C) Maybe. Sex cells only use half of the body's genetic code. It might get the copy of a gene that wasn't mutated. D) No. Only mutations that occur in the gametes (sex cells) are passed on to the offspring. Show Answer Correct Answer: D) No. Only mutations that occur in the gametes (sex cells) are passed on to the offspring. 24. Restriction enzymes were discovered by A) Alexander Fleming. B) Smith and Nathans. C) Berg. D) None. Show Answer Correct Answer: B) Smith and Nathans. 25. What is the process in which an unspecialized stem cell turns into a specialized body cell? A) Genetic Modification. B) Differentiation. C) DNA Replication. D) Respiration. Show Answer Correct Answer: B) Differentiation. 26. Which of the following is directly involved in the transportation of materials inside/within the cell? A) Endoplasmic Reticulum. B) Mitochondria. C) Lysosome. D) Vacuole. Show Answer Correct Answer: A) Endoplasmic Reticulum. 27. Which DNA has identical base pair sequences? A) DNA that segregates during meiosis 2. B) DNA that segregates either in mitosis or meiosis 1. C) DNA that segregates during mitosis. D) DNA that segregates during mitosis 2. Show Answer Correct Answer: C) DNA that segregates during mitosis. 28. The directions found in a strand of DNA are copied onto mRNA during which process? A) Transcription. B) Translation. C) Replication. D) Synthesis. Show Answer Correct Answer: A) Transcription. 29. Controls what goes in and out of the cell A) Cell membrane. B) Nucleus. C) Endoplasmic reticulum. D) None of above. Show Answer Correct Answer: A) Cell membrane. 30. Thymine makes up 42% of the nucleotides in a sample of DNA from an organism. Approximately what percentage of the nucleotides in this sample will be cytosine? A) 16%. B) 31%. C) 8%. D) 42%. Show Answer Correct Answer: C) 8%. ← PreviousNext →Related QuizzesBiology QuizzesAgriculture QuizzesMolecular Biology Quiz 1Molecular Biology Quiz 2Molecular Biology Quiz 3Molecular Biology Quiz 4Molecular Biology Quiz 5Molecular Biology Quiz 7Molecular Biology Quiz 8Molecular Biology Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books