This quiz works best with JavaScript enabled. Home > Biology > Molecular Biology – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 8 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is a base that is NOT contained in DNA? A) Adenine. B) Thymine. C) Uracil. D) Guanine. Show Answer Correct Answer: C) Uracil. 2. Mode of DNA replication is A) Conservative and bidirectional. B) Semiconservative and unidirectional. C) Semiconservative and bidirectional. D) Conservative and unidirectional. Show Answer Correct Answer: C) Semiconservative and bidirectional. 3. What is an example of a protein you could add to your plate? A) Apple. B) Carrots. C) Chicken. D) Olive oil. Show Answer Correct Answer: C) Chicken. 4. Gel electrophoresis separates DNA according to size. Which is true regarding movement of the DNA? A) The longest pieces of DNA will move the least distance. B) . the longest pieces of DNA will move the greatest distance. C) . the shortest pieces of DNA will move the least distance. D) The shortest pieces of DNA line up along the middle. Show Answer Correct Answer: C) . the shortest pieces of DNA will move the least distance. 5. TRANSCRIPTION:Transcription occurs in the: A) Nucleus. B) Cytoplasm. C) Ribosomes. D) Kitchen. Show Answer Correct Answer: A) Nucleus. 6. Which DIRECTLY determines the sequence of amino acids in a polypeptide chain? A) MRNA. B) TRNA. C) RRNA. D) DNA. Show Answer Correct Answer: A) MRNA. 7. The cell theory said that A) Atoms create all matter. B) Living things evolve. C) Cell activities depends on the activities of subcellular structures within the cell. D) Cells are the basic unit of structure and organization of organisms. Show Answer Correct Answer: D) Cells are the basic unit of structure and organization of organisms. 8. What replaces thymine in the RNA? A) Adenine. B) Uracil. C) Guanine. D) Cytosine. Show Answer Correct Answer: B) Uracil. 9. The two strands in DNA..... A) Run in opposite directions (antiparallel). B) Run in perpindicular directions. C) Run in the same direction (parallel). D) Run in random directions. Show Answer Correct Answer: A) Run in opposite directions (antiparallel). 10. What is the role of DNA ligase enzyme in Replication? A) Sealing of nucleotides nicks. B) Synthesis of DNA strand. C) Lagging strand synthesis. D) All of the above. Show Answer Correct Answer: A) Sealing of nucleotides nicks. 11. Which of the following statements is true about protein synthesis in prokaryotes? A) Extensive RNA processing is required before prokaryotic transcripts can be translated. B) Prokaryotic cells have complicated mechanisms for targeting proteins to the appropriate cellular organelles. C) Translation can begin while transcription is still in progress. D) Translation requires antibiotic activity. Show Answer Correct Answer: C) Translation can begin while transcription is still in progress. 12. What is the name given to the first step of protein synthesis? A) Transcription. B) Translation. C) Translocation. D) Protein synthesis. Show Answer Correct Answer: A) Transcription. 13. Gel electrophoresis A) The method of copying strands of DNA. B) The method for cutting strands of DNA. C) The method for separating strands of DNA. D) None of above. Show Answer Correct Answer: C) The method for separating strands of DNA. 14. Which of the following would complement the mRNA codon for CAG (DNA) A) CAG. B) AUG. C) GUC. D) UAC. Show Answer Correct Answer: C) GUC. 15. 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) Ionic Bond. B) Glycosidic bond. C) Peptide bond. D) Ester bond. Show Answer Correct Answer: C) Peptide bond. 16. Which practice will most likely decrease the chances of developing long-term illness? A) Eating a high-fat diet. B) Taking an aspirin every day. C) Sleeping for five hours each night. D) Developing a regular exercise routine. Show Answer Correct Answer: D) Developing a regular exercise routine. 17. Which statement correctly describes a way that bacteria are used in biotechnology? A) Bacteria make human cells that make insulin. B) Human insulin made by bacteria is injected into humans. C) Bacteria that make insulin are implanted in humans. D) Human insulin coding bacterial genes are spliced into human cells. Show Answer Correct Answer: B) Human insulin made by bacteria is injected into humans. 18. What kind of mutation is the result of an insertion? A) Silent Mutation. B) Missense mutation. C) Nonsense mutation. D) Frameshift mutation. Show Answer Correct Answer: D) Frameshift mutation. 19. Transcription is the process of: A) Making DNA. B) Making mRNA from DNA. C) "Unzipping" the molecule of DNA. D) Assembling a protein from RNA. Show Answer Correct Answer: B) Making mRNA from DNA. 20. Apart from proteins what else is found in the cell membrane A) Phospholipids. B) High energy electrons. C) Hydrogen. D) Enzymes. Show Answer Correct Answer: A) Phospholipids. ← 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 9Molecular Biology Quiz 10Molecular Biology Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books