This quiz works best with JavaScript enabled. Home > Biology > Molecular Biology – Quiz 20 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 20 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Where does transcription take place in a cell? A) Always in the nucleus. B) Always in the cytoplasm. C) In the nucleus in eukaryotes and the cytoplasm in prokaryotes. D) In the cytoplasm in eukaryotes and the nucleus in prokaryotes. Show Answer Correct Answer: C) In the nucleus in eukaryotes and the cytoplasm in prokaryotes. 2. How are plant and animal cells the same? A) They can produce their own oxygen. B) They can make their own food from sunlight. C) They can receive nutrients through the cell wall. D) They use mitochondria to release energy from sugars. Show Answer Correct Answer: D) They use mitochondria to release energy from sugars. 3. The property of water that results in water molecules "sticking" to one another is called A) Cohesion. B) Adhesion. C) High specific heat. D) High heat of fusion. Show Answer Correct Answer: A) Cohesion. 4. DNA is composed of all of the following EXCEPT: A) Phosphate group. B) Nitrogenous Base. C) Cytoplasm. D) Deoxyribose sugar. Show Answer Correct Answer: C) Cytoplasm. 5. In Hershey and Chase's experiment using bacteriophages and bacteria, the hereditary nature of DNA was supported by the presence of ..... in infected bacteria? A) S-35. B) N-15. C) C-14. D) P-32. Show Answer Correct Answer: D) P-32. 6. Please select who performs cellular respiration: A) Animals. B) Both animals and plants. C) Plants. D) None of above. Show Answer Correct Answer: B) Both animals and plants. 7. "One amino acid is encoded by one or more than one codons" Which property of the genetic code is best explained by this statement? A) Degeneracy of code. B) Universal nature. C) Non overlapping. D) Unambiguous. Show Answer Correct Answer: A) Degeneracy of code. 8. Which RNA bases would pair with TACGAA in transcription? A) AUGCUU. B) ATGCTT. C) GCATCC. D) GCAUCC. Show Answer Correct Answer: A) AUGCUU. 9. What did Erwin Chargaff conclude from his experiments? A) Nitrogen bases are held together by peptide bonds. B) A and T, C and G always occur in equal amounts. C) Proteins are the carriers of genetic information. D) C and G rarely occur in eukaryotic organisms. Show Answer Correct Answer: B) A and T, C and G always occur in equal amounts. 10. The antisense strand on the DNA molecule coding for three codons of a gene is:TATCGCACGWhat are the anticodons of the three tRNA molecules that correspond to this sequence? A) UAU, CGC and ACG. B) ATA, GCG and TGC. C) AUA, GCG and UGC. D) TAT, CGC and ACG. Show Answer Correct Answer: A) UAU, CGC and ACG. 11. STRUCTURE: The five-carbon sugar found in DNA. A) Ribose. B) Guanine. C) Deoxyribose. D) Helicase. Show Answer Correct Answer: C) Deoxyribose. 12. Which term describes the synthesis of complex molecules from simpler molecules? A) Adhesion. B) Catabolism. C) Metabolism. D) Anabolism. Show Answer Correct Answer: D) Anabolism. 13. All the statement are TRUE about Rho factor EXCEPT A) Binds to the transcription terminator pause site. B) Function by wrapping nucleic acid around the single cleft. C) Essential transcription protein in prokaryotes. D) Unwinding the RNA transcript from DNA template in elongation step. Show Answer Correct Answer: D) Unwinding the RNA transcript from DNA template in elongation step. 14. What is the role of DNA in translation? A) DNA is not involved in translation. B) DNA delivers the code to the ribosome. C) DNA delivers amino acids to the ribosome. D) DNA serves as the original template for protein synthesis. Show Answer Correct Answer: D) DNA serves as the original template for protein synthesis. 15. Seals the Okazaki fragments together A) DNA Polymerase. B) Ligase. C) Helicase. D) Primase. Show Answer Correct Answer: B) Ligase. 16. The existence of cytoskeletal element was first postulated by A) Strasburger. B) Koltzoff. C) Meischer. D) Crick. Show Answer Correct Answer: B) Koltzoff. 17. Have you ever heard of a skin graft? Skin cells can be harvested from one area and be grown in order to help burn victims or other skin injuries. Which process would result in the development of more skin cells in this treatment? A) Mitosis. B) Meiosis. C) Crossing Over. D) Interphase. Show Answer Correct Answer: A) Mitosis. 18. Which does not provide the body with the energy necessary for survival? A) Milk. B) Vegetables. C) Water. D) Steak. Show Answer Correct Answer: C) Water. 19. The process of removing introns from the mRNA in eukaryotes is called A) Capping. B) Splicing. C) Tailing. D) Slicing. Show Answer Correct Answer: B) Splicing. 20. ..... discovered transformation in bacteria. A) Hershey and Chase. B) Griffith. C) Messelson and Stahl. D) Franklin. Show Answer Correct Answer: B) Griffith. ← 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 9Molecular Biology Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books