This quiz works best with JavaScript enabled. Home > Agriculture > Biology > Molecular > Molecular Biology – Quiz 24 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 24 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the name of the binding site of RNA polymerase? A) Inducer. B) Promoter. C) Operator. D) Operon. Show Answer Correct Answer: B) Promoter. 2. What are the building blocks for DNA? A) Carbohydrates. B) Proteins. C) Lipids. D) Nucleotides. Show Answer Correct Answer: D) Nucleotides. 3. Which molecule is a product of respiration? A) Carbon dioxide. B) Oxygen. C) Protein. D) Glucose. Show Answer Correct Answer: A) Carbon dioxide. 4. In analyzing the number of different bases in a DNA sample, which result would be consistent with the base-pairing rules? A) A + G = C + T. B) A = G. C) A + T = G + G. D) A = C. Show Answer Correct Answer: A) A + G = C + T. 5. The end products of transcription are A) Amino acids. B) DNA. C) Lipids. D) MRNA. Show Answer Correct Answer: D) MRNA. 6. How does biotechnology most likely affect North Carolina's population? A) Jobs are created attracting more people to the area. B) Research advancement causes people in need of medicine to move to the area. C) People are not concerned with biotechnology and overall population is not impacted. D) The issue causes controversy and people hesitate to live in a state where a large amount of research takes place. Show Answer Correct Answer: A) Jobs are created attracting more people to the area. 7. What is the pigment in chloroplasts that performs photosynthesis? A) ADP. B) Chlorophyll. C) Chlorosynthesis. D) Electron Transport. Show Answer Correct Answer: B) Chlorophyll. 8. Identify the DELETION mutation from the following DNA sequence: ATG CCA AAT A) ATG CCT AAA T. B) ATG CCA AAT. C) ATC CA AT. D) ATG TCA AAT. Show Answer Correct Answer: C) ATC CA AT. 9. Foreign, small, circular, self-replicating DNA molecule that inhabits bacteria and can express itself through the host bacterium. F plasmid contains genes for production of a pilus; a cytoplasmic bridge connecting two cells that allows DNA to move from one cell to another. R plasmid confers resistance to an antibiotic on a host bacterium; can be transferred from one cell to another by conjugation. A) Exons. B) Pili. C) Introns. D) Plasmid. Show Answer Correct Answer: D) Plasmid. 10. What is the advantage of membrane compartments A) Increase surface area to diffusion ratio. B) Increase the surface area to volume ratio. C) Increase surface area. D) Increase volume. Show Answer Correct Answer: B) Increase the surface area to volume ratio. 11. What is the function of a cell wall? A) To protect and support the cell. B) To perform different functions in each cell. C) To prevent water from passing through it. D) To prevent oxygen from entering the cell. Show Answer Correct Answer: A) To protect and support the cell. 12. What is the correct sequence of chemicals produced in anaerobic respiration? A) Glucose $\rightarrow$ lactate $\rightarrow$ pyruvate. B) Lactate $\rightarrow$ pyruvate $\rightarrow$ ethanol. C) Ethanol $\rightarrow$ pyruvate $\rightarrow$ glucose. D) Glucose $\rightarrow$ pyruvate $\rightarrow$ lactate. Show Answer Correct Answer: D) Glucose $\rightarrow$ pyruvate $\rightarrow$ lactate. 13. Retrotransposons use ..... to make DNA copy from RNA A) Polymerase. B) Reverse transcriptase. C) Invertase. D) None of the above. Show Answer Correct Answer: B) Reverse transcriptase. 14. DNA replication results in two DNA molecules, A) Each one with two original strands. B) Each one with two new strands. C) Each one with one new strand and one original strand. D) One with two new strands and the other with two original strands. Show Answer Correct Answer: C) Each one with one new strand and one original strand. 15. What structure carries that amino acid to the ribosome? A) RRNA. B) TRNA. C) MRNA. D) DNA. Show Answer Correct Answer: B) TRNA. 16. True or False: in replication, the language of the information is changed A) True. B) False. C) It depends. D) None of above. Show Answer Correct Answer: B) False. 17. An example of a simple carbohydrate could be ..... A) Bread. B) Pasta. C) Oatmeal. D) Cupcake. Show Answer Correct Answer: D) Cupcake. 18. The process to go from mRNA to a protein is called ..... A) RRNA. B) Transcription. C) Replication. D) Translation. Show Answer Correct Answer: D) Translation. 19. Which of the following would result in a frameshift mutation? A) Insertions only. B) Substitution only. C) Deletion only. D) Insertions and Deletions. Show Answer Correct Answer: D) Insertions and Deletions. 20. Which best describes the process of photosynthesis? USE YOUR NOTES! A) Carbon dioxide and oxygen are converted into glucose and water. B) Carbon dioxide and water are converted into glucose and oxygen. C) Oxygen and glucose are converted into carbon dioxide and water. D) Oxygen and water are converted into carbon dioxide and glucose. Show Answer Correct Answer: B) Carbon dioxide and water are converted into glucose and oxygen. 21. According to Chargaff's rule of base pairing, which of the following is true about DNA? A) A=T and C=G. B) A=C and T=G. C) A=G and T=C. D) A=T=C=G. Show Answer Correct Answer: A) A=T and C=G. 22. If a portion of DNA strand reads:3' A A A T T T C 5'The matching strand would read..... A) 5' A A A T T T C 3'. B) 3' U U U A A A G 5'. C) 5' T T T A A A G 3'. D) 3' T T T A A A G 5'. Show Answer Correct Answer: C) 5' T T T A A A G 3'. 23. This cannot leave the nucleus A) DNA. B) RNA. C) Both. D) None of above. Show Answer Correct Answer: A) DNA. 24. What is a Plasmid DNA? A) An extra-chromosomal double stranded circular DNA molecule. B) An extra-chromosomal double stranded linear DNA molecule. C) An extra-chromosomal single stranded DNA molecule. D) An extra-chromosomal triple stranded DNA molecule. Show Answer Correct Answer: A) An extra-chromosomal double stranded circular DNA molecule. 25. A 2021bp plasmid is cut at the 5th base, the 1000th base, and the 1540th base. How many pieces are there and what's the longest piece? A) 3, 995bp. B) 4, 540bp. C) 3, 486bp. D) None of these. Show Answer Correct Answer: A) 3, 995bp. 26. The relaxation of base pairing rules for the third nucleotide. Ex; UCU, UCC, UCA, and UCG. All code for the same amino acid, serine. A) Codons. B) RNA. C) Wobble. D) Mutation. Show Answer Correct Answer: C) Wobble. 27. In the process of DNA replication, nucleotides are added as DNA is synthesized. Which best describes how it is determined what nucleotides are added? A) The nucleotides are added to exactly match the sequence on the original strand. B) The nucleotides that are in the greatest supply in the cell are added first. C) The nucleotides are added based in the complementary base pairing rules. D) The nucleotides are added randomly. Show Answer Correct Answer: C) The nucleotides are added based in the complementary base pairing rules. 28. What is the role of protein kinase in a signal transduction pathway? A) Deactivate a molecule by removing a phosphate from the target molecule. B) Activates a molecule by removing a phosphate from the target molecule. C) Activates a molecule by adding a phosphate to the target molecule. D) Deactivate a molecule by adding a phosphate to the target molecule. Show Answer Correct Answer: C) Activates a molecule by adding a phosphate to the target molecule. 29. In RNA, uracil takes the place of the DNA nitrogen base called A) Thymine. B) Guanine. C) Adenine. D) Cytosine. Show Answer Correct Answer: A) Thymine. 30. Transcription is the process where A) DNA is copied. B) DNA is copied in tRNA. C) DNA is replicated. D) DNA is copied into mRNA. Show Answer Correct Answer: D) DNA is copied into mRNA. ← 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