This quiz works best with JavaScript enabled. Home > Biology > Molecular Biology – Quiz 53 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 53 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of these carries the code for making a protein? A) MRNA. B) RRNA. C) TRNA. D) None of above. Show Answer Correct Answer: A) MRNA. 2. Which of the following is NOT a stop codon for translation? A) UGA. B) UAA. C) UAG. D) TATA. Show Answer Correct Answer: D) TATA. 3. Cellular respiration occurs in A) Chloroplasts. B) Mitochondria. C) Golgi aparatus. D) Thylakoid. Show Answer Correct Answer: B) Mitochondria. 4. CDNA is synthesised from RNA by the enzyme A) DNA polymerase. B) DNA synthetase. C) DNA convertase. D) Reverse transcriptase. Show Answer Correct Answer: D) Reverse transcriptase. 5. Which of the following are joined by peptide bonds during the process of protein synthesis? A) Monosachharides. B) Triglycerides. C) Nucleotides. D) Amino acids. Show Answer Correct Answer: D) Amino acids. 6. DNA replication results in A) Two DNA molecules that are identical to the original DNA molecule. B) One mRNA molecule that is complementary to the DNA molecule. C) One chain of amino acids that is complementary to the DNA molecule. D) None of above. Show Answer Correct Answer: A) Two DNA molecules that are identical to the original DNA molecule. 7. Which enzyme catalyzes the elongation of the leading strand? A) RNA polymerase. B) Helicase. C) DNA polymerase. D) Ligase. Show Answer Correct Answer: C) DNA polymerase. 8. The addition or deletion of nitrogen bases that change the reading from of mRNA is a A) Point mutation. B) Silent mutation. C) Transversion. D) Frameshift mutations. Show Answer Correct Answer: D) Frameshift mutations. 9. A segment of DNA has the sequence ATGCCT. What will be the sequence for the transcripted segment?. A) UACGGA. B) ATGCCT. C) TACGGA. D) AUGCCU. Show Answer Correct Answer: A) UACGGA. 10. Which of the following are direct methods used to measure the rate of photosynthesis?I. production of oxygenII. uptake of carbon dioxideIII. increase in biomass A) I only. B) III only. C) I and II only. D) I, II and III. Show Answer Correct Answer: C) I and II only. 11. Which are true of DNA replication? A) Semi-conservative, purine-purine pairing. B) Dispersive, purine-purine pairing. C) Conservative, complementary pairing. D) Semi-conservative, complementary pairing. Show Answer Correct Answer: D) Semi-conservative, complementary pairing. 12. Which of these is not found in an animal cell? A) Mitochondria. B) Nucleus. C) Cell wall. D) Cell membrane. Show Answer Correct Answer: C) Cell wall. 13. The Genetic Code A) Is used to translate mRNA codons into amino acids. B) Determines the anticodons and amino acids on each tRNA. C) Is the same for all organisms on Earth. D) All of the above. Show Answer Correct Answer: D) All of the above. 14. Which food choice should Johnny choose if he is getting ready for a track meet and he is a sprinter? A) Steak. B) Apple. C) Pasta. D) Water. Show Answer Correct Answer: B) Apple. 15. Short unique fragments that are individual to a person and cut with restriction endonucleases. Can be separated after cutting through gel electrophoresis A) RFLP. B) VNTR. C) Probe. D) Gel electrophoresis. Show Answer Correct Answer: A) RFLP. 16. What is anticodon? A) Base duplet on tRNA that carry one amino acid. B) Not complementary pair with codon on mRNA. C) Base triplet on mRNA that carry one amino acid. D) Base triplet on tRNA that carry one amino acid. Show Answer Correct Answer: D) Base triplet on tRNA that carry one amino acid. 17. Which of the following are proteins? A) Arugula. B) Strawberries. C) Tortilla. D) Beans, eggs, chicken. Show Answer Correct Answer: D) Beans, eggs, chicken. 18. What is the missing part? Grain, Protein, Vegetable, Fruit, .....? A) Milk. B) Water. C) Soda. D) Juice. Show Answer Correct Answer: A) Milk. 19. A certain gene codes for a polypeptide that is 120 amino acids long. Approximately how many nucleotides long is the mRNA that codes for this polypeptide likely to be? A) 360. B) 480. C) 40. D) 30. Show Answer Correct Answer: A) 360. 20. Which of the following was the important clue from Rosalind Franklin's work that helped Watson and Crick develop their model of DNA? A) Her work with radioactively labeling bacteriophages allowed Watson and Crick to know that DNA was the genetic material and not proteins. B) Her picture of DNA confirmed observations with Chargaff of the relative percentages of A, T, G and C in DNA. C) She created a photograph of DNA that showed exactly what DNA looked like Watson and Crick merely copied this picture to make their model. D) A photograph created by the scattering pattern of X-rays sent through a sample of DNA showed that the molecule was helical and consisted of two strands. Show Answer Correct Answer: D) A photograph created by the scattering pattern of X-rays sent through a sample of DNA showed that the molecule was helical and consisted of two strands. ← 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