This quiz works best with JavaScript enabled. Home > Biology > Molecular > Molecular Biology – Quiz 55 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 55 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The number of codons in the genetic code is A) 3. B) 4. C) 20. D) 64. Show Answer Correct Answer: D) 64. 2. The target enzyme for Gq proteins is ..... A) PI3-kinase. B) Adenylyl cyclase. C) Phospholipase C-beta. D) None of above. Show Answer Correct Answer: C) Phospholipase C-beta. 3. What is the name for this: RNA --> RNA? A) Replication. B) Transcription. C) Translation. D) None of these. Show Answer Correct Answer: D) None of these. 4. Which of the following is an example of a missense mutation? A) A nucleotide and its partner are replaced with an "incorrect" pair of nucleotides which destroys the function of the final product. B) A nucleotide pair is added into a gene destroying the reading frame of the gene. C) A frameshift mutation occurs, causing a nonfunctional protein. D) A nucleotide pair substitution occurs, which causes a codon to code for an amino acid that may not be the "correct" one, although translation continues. Show Answer Correct Answer: D) A nucleotide pair substitution occurs, which causes a codon to code for an amino acid that may not be the "correct" one, although translation continues. 5. A ..... is a small ring of DNA found in a bacterial cell. A) Virus. B) Plasmid. C) Gene bullet. D) PCR. Show Answer Correct Answer: B) Plasmid. 6. GENERAL: DNA is found in the: A) Cell membrane. B) Vacuole. C) Chloroplast. D) Nucleus. Show Answer Correct Answer: D) Nucleus. 7. What type of gene mutation has occurred here? Normal-AGA-TTC-ATA-GCG Mutant-AGA-TTC-AAT-AGC-G A) Deletion frameshift. B) Insertion frameshift. C) Substitution. D) Nonsense. Show Answer Correct Answer: B) Insertion frameshift. 8. How many codons are in this mRNA molecule?AUG UAA ACC GAG CCA UAG A) 18. B) 6. C) 1. D) 5. Show Answer Correct Answer: B) 6. 9. Which process causes the body of multi-celled organisms to grow larger? A) Growth of individual cells. B) Proper nutrients and a good nights sleep. C) Cell division by mitosis. D) Cell division by meiosis. Show Answer Correct Answer: C) Cell division by mitosis. 10. What does DNA polymerase do? A) DNA replication. B) Proofreads its product. C) Edits its mistakes. D) All of the above. Show Answer Correct Answer: D) All of the above. 11. Choose the nucleotide sequence of the RNA strand that would be complementary to the following strand: GTAGTCA A) UATUAGA. B) ACGACTG. C) CAUCAGU. D) CATCAGT. Show Answer Correct Answer: C) CAUCAGU. 12. DNA consists of bases, what holds the base pairs together? A) Peptide bonds. B) Ionic bonds. C) Hydrogen bonds. D) Covalent bonds. Show Answer Correct Answer: C) Hydrogen bonds. 13. Which lunch choice is best for a healthy lifestyle? A) Hamburger. B) Turkey sandwich. C) Fried fish sandwich. D) Pizza. Show Answer Correct Answer: B) Turkey sandwich. 14. ..... proved that DNA was the transforming principle. A) Hershey and Chase. B) Griffith. C) Messelson and Stahl. D) Franklin. Show Answer Correct Answer: A) Hershey and Chase. 15. Which of the following processes release the most ATP per molecule of glucose for immediate cell use? A) Aerobic respiration. B) Anaerobic respiration. C) Fermentation. D) Photosynthesis. Show Answer Correct Answer: A) Aerobic respiration. 16. Which is the calculation for BMI? A) Mass (kg)2 / height (cm). B) Mass (kg) / height (m)2. C) Mass (kg) / height (m). D) Height (cm)2 / mass (kg). Show Answer Correct Answer: B) Mass (kg) / height (m)2. 17. What is the importance of the codons in protein synthesis? A) Each codon is the code for a particular amino acid. B) Each codon is the code for a nucleotide sequence. C) Each codon is the code for one of the bases found in DNA. D) Each codon is the code for a base found in RNA. Show Answer Correct Answer: A) Each codon is the code for a particular amino acid. 18. How big is the Fruit/Vegetable section on the plate? A) The whole plate. B) 1/2 the plate. C) It's not on the plate. D) 1/4 of the plate. Show Answer Correct Answer: B) 1/2 the plate. 19. UV radiation can cause Mutation in DNA by forming unusual bonds between Thymine nucleotides, that unusual bonds are refereed as A) Thymine dimer. B) Thymine Monomer. C) Thymine trimer. D) Thymine pentamer. Show Answer Correct Answer: A) Thymine dimer. 20. REPLICATION:DNA replication is when: A) DNA makes DNA. B) DNA makes RNA. C) RNA makes Protein. D) DNA makes Protein. Show Answer Correct Answer: A) DNA makes DNA. ← PreviousNext →Related QuizzesBiology 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books