This quiz works best with JavaScript enabled. Home > Agriculture > Biology > Molecular > Molecular Biology – Quiz 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 13 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. DNA holds the code for A) Carbohydrates. B) Protein. C) Sugar. D) Lipids. Show Answer Correct Answer: B) Protein. 2. The making of a new DNA strand is called A) Translation. B) Transcription. C) Replication. D) Regeneration. Show Answer Correct Answer: C) Replication. 3. The process of making proteins on the ribosomes based on instructions from messenger RNA is called A) Transformation. B) Transcription. C) Translation. D) Molecular biology. Show Answer Correct Answer: C) Translation. 4. What type of bond joins amino acids to form the polypeptide? A) Peptide bonds. B) Polypeptide bonds. C) Ionic bonds. D) Hydrogen bonds. Show Answer Correct Answer: A) Peptide bonds. 5. The enzyme that cleaves DNA A) Ligase. B) Polymerase. C) Restriction enzyme. D) None of above. Show Answer Correct Answer: C) Restriction enzyme. 6. Which portion of the DNA molecule varies from nucleotide to nucleotide and thus serves as the portion of the nucleotide which codes for amino acid sequences? A) Phosphate sugar. B) Ribose sugar. C) Nitrogenous bases. D) Hydrogen bonds. Show Answer Correct Answer: C) Nitrogenous bases. 7. If a code on a DNA molecule for a specific amino acid is CTA, what would the messenger RNA codon and the transfer RNA anticodon be? A) MRNA = GAU and tRNA = CUA. B) MRNA = GAT and tRNA = CTA. C) MRNA = CUA and tRNA = GAU. D) MRNA = GTU and tRNA = CTA. Show Answer Correct Answer: A) MRNA = GAU and tRNA = CUA. 8. William Hofmeister discovered..... A) RNA. B) Chromosomes. C) Amino acid. D) Nucleic acid. Show Answer Correct Answer: B) Chromosomes. 9. How many amino acids are naturally occurring (synthesized by ribosomes)? A) 20. B) 19. C) 21. D) 22. Show Answer Correct Answer: A) 20. 10. The enzyme that splits open the DNA creates what's called a fork - where the DNA separates into the lagging strand and the ..... strand. A) Ligase. B) Okazaki. C) Leading. D) Leveraging. Show Answer Correct Answer: C) Leading. 11. Where does translation take place in the cell? A) Cytoplasm. B) Endoplasmic reticulum. C) Nucleus. D) Golgi apparatus. Show Answer Correct Answer: A) Cytoplasm. 12. 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. 13. 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. 14. The property of water that results in water molecules "sticking" to one another is called A) Adhesion. B) High specific heat. C) High heat of fusion. D) Cohesion. Show Answer Correct Answer: D) Cohesion. 15. DNA is composed of all of the following EXCEPT: A) Deoxyribose sugar. B) Cytoplasm. C) Nitrogenous Base. D) Phosphate group. Show Answer Correct Answer: B) Cytoplasm. 16. 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) N-15. B) S-35. C) C-14. D) P-32. Show Answer Correct Answer: D) P-32. 17. 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. 18. "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) Non overlapping. B) Degeneracy of code. C) Universal nature. D) Unambiguous. Show Answer Correct Answer: B) Degeneracy of code. 19. Which RNA bases would pair with TACGAA in transcription? A) GCATCC. B) GCAUCC. C) AUGCUU. D) ATGCTT. Show Answer Correct Answer: C) AUGCUU. 20. 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. 21. 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. 22. STRUCTURE: The five-carbon sugar found in DNA. A) Ribose. B) Guanine. C) Deoxyribose. D) Helicase. Show Answer Correct Answer: C) Deoxyribose. 23. Which term describes the synthesis of complex molecules from simpler molecules? A) Catabolism. B) Adhesion. C) Metabolism. D) Anabolism. Show Answer Correct Answer: D) Anabolism. 24. All the statement are TRUE about Rho factor EXCEPT A) Essential transcription protein in prokaryotes. B) Function by wrapping nucleic acid around the single cleft. C) Binds to the transcription terminator pause site. 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. 25. What is the role of DNA in translation? A) DNA serves as the original template for protein synthesis. B) DNA delivers the code to the ribosome. C) DNA delivers amino acids to the ribosome. D) DNA is not involved in translation. Show Answer Correct Answer: A) DNA serves as the original template for protein synthesis. 26. Seals the Okazaki fragments together A) Helicase. B) DNA Polymerase. C) Primase. D) Ligase. Show Answer Correct Answer: D) Ligase. 27. The existence of cytoskeletal element was first postulated by A) Koltzoff. B) Strasburger. C) Crick. D) Meischer. Show Answer Correct Answer: A) Koltzoff. 28. 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) Crossing Over. C) Interphase. D) Meiosis. Show Answer Correct Answer: A) Mitosis. 29. Which does not provide the body with the energy necessary for survival? A) Milk. B) Water. C) Steak. D) Vegetables. Show Answer Correct Answer: B) Water. 30. The process of removing introns from the mRNA in eukaryotes is called A) Slicing. B) Tailing. C) Capping. D) Splicing. Show Answer Correct Answer: D) Splicing. ← PreviousNext →Related QuizzesBiology QuizzesAgriculture QuizzesMolecular Biology Quiz 1Molecular Biology Quiz 2Molecular Biology Quiz 3Molecular Biology Quiz 4Molecular Biology Quiz 5Molecular Biology Quiz 6Molecular Biology Quiz 7Molecular Biology Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books