This quiz works best with JavaScript enabled. Home > Agriculture > Biology > Molecular > Molecular Biology – Quiz 33 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 33 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What enzyme is responsible for transcription? A) DNA polymerase. B) Ribosomes. C) Nucleolus in the nucleus. D) RNA polymerase. Show Answer Correct Answer: D) RNA polymerase. 2. The majority of oxygen in the blood is carried by ..... in red blood cells. A) Glucose. B) Fats. C) Sodium chloride. D) Hemoglobin. Show Answer Correct Answer: D) Hemoglobin. 3. A metabolic pathway consists of ..... A) A series of enzymes. B) A series of biological reactions. C) A series of chemical reactions. D) A series of reactions. Show Answer Correct Answer: C) A series of chemical reactions. 4. Half of your grains should be A) Whole grains. B) White bread. C) Bagels. D) Donuts. Show Answer Correct Answer: A) Whole grains. 5. Which of the following involves using an RNA/protein complex to remove introns and connect exons in the RNA transcript? A) Proteosome digestion. B) Histone acetylation. C) DNA methylation. D) Alternative spicing. Show Answer Correct Answer: D) Alternative spicing. 6. James exercises for 30 minutes each day, five days a week. What would be a benefit of this lifestyle choice? A) Loss of bone and muscle strength. B) Increased blood pressure. C) Improvement in overall health. D) Decreased energy levels. Show Answer Correct Answer: C) Improvement in overall health. 7. Organelle in eukaryotic cells that is the site of cellular respiration that burns sugar with oxygen to produce energy, carbon dioxide, and water. A) Chloroplasts. B) Mitochondria. C) Vacuoles. D) Golgi Apparatus. Show Answer Correct Answer: B) Mitochondria. 8. Expressed sequences=genes. Code for polypeptide A) SsDNA. B) Snrnps. C) Exons. D) Introns. Show Answer Correct Answer: C) Exons. 9. Which of the following are basic needs for plants to make food, but not for animals. A) Water and oxygen. B) Acid rain. C) Sunlight, CO2, and soil. D) Glucose. Show Answer Correct Answer: C) Sunlight, CO2, and soil. 10. How many transmembrane domain does G protein couple reveptor have A) 8. B) 6. C) 5. D) 7. Show Answer Correct Answer: D) 7. 11. The loss of enzyme shape is called A) Denaturation. B) Stress. C) Random movement. D) Alignment. Show Answer Correct Answer: A) Denaturation. 12. What is the definition of cell respiration A) The controlled release of energy of energy, in the form of ATP, from organic compounds. B) The process used in some organisms to produce their own organic substances. C) The process that uses energy, in the form of ATP, to produce organic compounds. D) We finna be breathing for real. Show Answer Correct Answer: A) The controlled release of energy of energy, in the form of ATP, from organic compounds. 13. DNA helicase, polymerase, ligase, and primase are alike in that they are all what? A) Nitrogenous bases. B) Codons. C) Nucleotides. D) Enzymes. Show Answer Correct Answer: D) Enzymes. 14. A strand of DNA has these bases: AGC CAT GTA TAC. What is the complementary DNA strand? (3.1.1) A) UCG CUA CAU AUG. B) TGC CTA GAT ATC. C) ACG GAT CTA TAG. D) TCG GTA CAT ATG. Show Answer Correct Answer: D) TCG GTA CAT ATG. 15. What does tRNA do? A) Builds proteins. B) Transfers amino acids to the ribosomes. C) Makes up ribosomes. D) Provides information from DNA to ribosomes. Show Answer Correct Answer: B) Transfers amino acids to the ribosomes. 16. Brandon just ate celery with peanut butter on top. Did he eat any protein? A) Maybe. B) Yes. C) No. D) None of above. Show Answer Correct Answer: B) Yes. 17. Protein Synthesis takes place at what organelle? A) Ribosome. B) Chloroplast. C) Mitochondria. D) Nucleus. Show Answer Correct Answer: A) Ribosome. 18. If you have a codon AUC what is the anticodon that complements it? A) UAG. B) TAG. C) AUG. D) UAC. Show Answer Correct Answer: A) UAG. 19. Which event in a cell would use ATP to maintain homeostasis? A) A cell acquiring oxygen from the environment. B) A cell releasing water to the environment. C) A cell using energy to transport a large food molecule through a protein. D) A cell releasing a molecule through the cell membrane without energy. Show Answer Correct Answer: C) A cell using energy to transport a large food molecule through a protein. 20. Which organelle converts the energy in food into energy for the cell (cellular respiration)? A) Ribosomes. B) Golgi Body. C) Nucleolus. D) Mitochondria. Show Answer Correct Answer: D) Mitochondria. 21. An mRNA molecule is produced in the step of protein synthesis: A) Transcription. B) Duplication. C) Translation. D) Replication. Show Answer Correct Answer: A) Transcription. 22. How does a deletion mutation differ from a substitution mutation? A) A deletion mutation occurs when a base is lost from a codon and a substitution mutation occurs when a single base is replaced by a different base. B) A deletion mutation causes a frame-shift mutation and a substitution causes a point mutation. C) Both of the above are correct. D) None of the above are correct. Show Answer Correct Answer: C) Both of the above are correct. 23. Which one of the following molecules has an unbranched, linear structure? A) Amylose. B) Glycogen. C) Amylase. D) Amylopectin. Show Answer Correct Answer: A) Amylose. 24. Which scientist(s) stated that DNA contains phosphorus while proteins contain sulfur? A) Franklin & Watkins. B) Meselson & Stahl. C) Hershey & Chase. D) Watson & Crick. Show Answer Correct Answer: C) Hershey & Chase. 25. The expressing sequences in mRNA are A) Introns. B) Exons. C) Euchromatin. D) Heteochromatin. Show Answer Correct Answer: B) Exons. 26. Transcription is the process that makes ..... from ..... A) DNA, RNA. B) RNA, RNA. C) RNA, DNA. D) DNA, DNA. Show Answer Correct Answer: C) RNA, DNA. 27. Process by which DNA makes RNA. A) Transcription. B) Replication. C) Translation. D) None of above. Show Answer Correct Answer: A) Transcription. 28. Which of these is part of the description of protein? A) A branched chain of fatty acids. B) A folded chain of amino acids. C) A folded chain of carbohydrates. D) A branched chain of nucleic acids. Show Answer Correct Answer: B) A folded chain of amino acids. 29. What are the products of photosynthesis? A) Water and carbon dioxide. B) Oxygen and glucose. C) Oxygen and carbon dioxide. D) Oxygen and water. Show Answer Correct Answer: B) Oxygen and glucose. 30. Anaerobic respiration..... A) Doesn't require oxygen. B) Requires CO2. C) Doesn't require CO2. D) Requires oxygen. Show Answer Correct Answer: A) Doesn't require oxygen. ← 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