This quiz works best with JavaScript enabled. Home > Biology > Molecular Biology – Quiz 33 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 33 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is true about phosphodiester linkage? A) 5'-phosphate group of one nucleotide unit is joined to the 3'-hydroxyl group of the next nucleotide. B) 3'-phosphate group of one nucleotide unit is joined to the 5'-hydroxyl group of the next nucleotide. C) 5'-phosphate group of one nucleotide unit is joined to the 5'-hydroxyl group of the next nucleotide. D) 3'-phosphate group of one nucleotide unit is joined to the 3'-hydroxyl group of the next nucleotide. Show Answer Correct Answer: A) 5'-phosphate group of one nucleotide unit is joined to the 3'-hydroxyl group of the next nucleotide. 2. RNA nucleotides contain which components? A) A phosphate group, a nitrogenous base, and deoxyribose. B) A nitrogenous base, ribose, and DNA polymerase. C) A phosphate group, deoxyribose, and ribose. D) A phosphate group, a nitrogenous base, and ribose. Show Answer Correct Answer: D) A phosphate group, a nitrogenous base, and ribose. 3. What enables bacteria to produce human growth hormone? A) DNA replication is semi-conservative. B) The polymerase chain reaction can be used. C) They need the hormone for growth. D) The genetic code is universal. Show Answer Correct Answer: D) The genetic code is universal. 4. The function of $\beta$ subunit of polymerase isTemplate binding Catalytic binding Promoter binding Cation binding A) Template binding. B) Catalytic binding. C) Promoter binding. D) Cation binding. Show Answer Correct Answer: B) Catalytic binding. 5. Which of the following one is a chemical agent that can cause mutation? A) UV. B) X-rays. C) 5-bromouracil. D) Human Papiloma virus. Show Answer Correct Answer: C) 5-bromouracil. 6. If a strand reads:3' A A A T T T C 5'The matching strand would read..... A) 5' T T T A A A G 3'. B) 3' T T T A A A G 5'. C) 5' A A A T T T C 3'. D) 3' U U U A A A G 5'. Show Answer Correct Answer: A) 5' T T T A A A G 3'. 7. Name of the enzyme that cut out the intron A) Splicosome. B) Rho independent. C) RNA polymerase. D) Rho dependent. Show Answer Correct Answer: A) Splicosome. 8. RNA is different from DNA, because RNA: A) Is a single strand. B) Contains the sugar ribose. C) Replaces Thymine for Uracil. D) All of these answers. Show Answer Correct Answer: D) All of these answers. 9. What is the name for when the RNA info is read and turned into a protein? A) Transcription. B) Transcribation. C) Translation. D) Replication. Show Answer Correct Answer: C) Translation. 10. When a person is extremely cold, his or her muscles will use energy to spasm and generate heat, the act of shivering. Which conclusion best explains why the body does this? A) The body maintains homeostasis by keeping the body at a specific temperature. B) The body tricks the mind into thinking it is not cold so that it can maintain homeostasis. C) The body maintains homeostasis by releasing water to maintain the muscles' temperature. D) The body loses mass through shivering so that it can better maintain homeostasis. Show Answer Correct Answer: A) The body maintains homeostasis by keeping the body at a specific temperature. 11. The anticodon is found on what structure? A) MRNA. B) TRNA. C) RRNA. D) DNA. Show Answer Correct Answer: B) TRNA. 12. Which amino acids would be added to a polypeptide if the mRNA codons were CCC-GUC-AUA? A) Proline-valine-isoleucine. B) Glycine-glutamine-tyrosine. C) Proine-alanine-threonine. D) Leucine-cysteine-asparagine. Show Answer Correct Answer: A) Proline-valine-isoleucine. 13. Which of the following does NOT describe the structure of DNA? A) Double helix. B) Nucleotide polymer. C) Contains adenine-guanine pairs. D) Sugar-phosphate backbone. Show Answer Correct Answer: C) Contains adenine-guanine pairs. 14. You are given 100.0 ml of a 2.0 M solution of KOH. What would be the molarity of the solution if it is diluted to a volume of 1000 ml? A) 2 M. B) 0.02 M. C) 0.2 M. D) 0.002 M. Show Answer Correct Answer: C) 0.2 M. 15. Identify the SUBSTITUTION mutation from the following DNA sequence: ATG CCA AAT A) ATG TCA AAT. B) ATG CCT AAA T. C) ATC CA AT. D) ATG CCA AAT. Show Answer Correct Answer: A) ATG TCA AAT. 16. The bonds that hold the two strands of DNA together come from A) The attraction of phosphate groups for each other. B) Strong bonds between nitrogen bases and the sugar-phosphate backbone. C) Weak hydrogen bonds between nitrogen bases. D) Carbon-to-carbon bonds in the sugar portion of the nucleotids. Show Answer Correct Answer: C) Weak hydrogen bonds between nitrogen bases. 17. DNA strand has the following bases AAGCCA what are the bases on the complementary strand A) GGCTTA. B) TTGGGA. C) CCAGGT. D) TTCGGT. Show Answer Correct Answer: D) TTCGGT. 18. What is the maximum number of bonds a carbon atom can form with another atoms? A) 3. B) 2. C) 4. D) 6. Show Answer Correct Answer: C) 4. 19. The sequence of amino acids forming a polypeptide is known as the ..... structure of a protein. A) Primary. B) Secondary. C) Tertiary. D) Quaternary. Show Answer Correct Answer: A) Primary. 20. The process by which the genetic code of DNA is copied into a strand of RNA is called A) Translation. B) Transcription. C) Transformation. D) Replication. Show Answer Correct Answer: B) Transcription. ← 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