This quiz works best with JavaScript enabled. Home > Biology > Molecular > Molecular Biology – Quiz 26 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 26 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the function of helicase? A) It forms bonds between DNA nucleotides. B) It adds new nucleotides to the DNA helix. C) It forms the DNA helix. D) It separates DNA strands. Show Answer Correct Answer: D) It separates DNA strands. 2. Which body system is not involved in getting nutrients to cells? A) Circulatory System. B) Digestive System. C) Reproductive system. D) None of above. Show Answer Correct Answer: C) Reproductive system. 3. Changes in DNA sequences that affect genetic information are known as A) Replications. B) Mutations. C) Transformations. D) Translations. Show Answer Correct Answer: B) Mutations. 4. How are plant cells different from human cells? A) Human cells need food, but plant cells do not. B) Human cells need energy, but plant cells do not. C) Plant cells make their own food, but human cells do not. D) Plant cells make their own energy, but human cells do not. Show Answer Correct Answer: C) Plant cells make their own food, but human cells do not. 5. Which best describes how organisms process materials to gain energy for life processes? A) Oxygen is broken down in a chemical reaction with sugars to release energy. B) Sugars are broken down in a chemical reaction with oxygen to release energy. C) Vitamins and minerals are used to build complex molecules that store energy. D) Vitamins and minerals are used to break down complex molecules that store energy. Show Answer Correct Answer: B) Sugars are broken down in a chemical reaction with oxygen to release energy. 6. Humans can respire aerobically and anaerobically. Which are products of both aerobic cell respiration and anaerobic cell respiration in humans? A) Pyruvate and ATP. B) Pyruvate and lactate. C) ATP and carbon dioxide. D) Lactate and carbon dioxide. Show Answer Correct Answer: A) Pyruvate and ATP. 7. Half of your plate should be: A) Fruits and Vegetables. B) Protein. C) Grains. D) Dairy. Show Answer Correct Answer: A) Fruits and Vegetables. 8. Which of the following statements is not true about RNA? A) Does not have a double stranded structure. B) Thymine is present. C) Does not obey Chargaff's rule. D) The sugar contained in RNA is a ribose. Show Answer Correct Answer: B) Thymine is present. 9. What type of replication occurs in bacterial plasmid? A) D-loop Replication. B) Rolling Circle Replication. C) Theta model Replication. D) None of the above. Show Answer Correct Answer: B) Rolling Circle Replication. 10. Which of the following are examples of correctly paired base pairs? A) A-T, G-C. B) A-A, C-C. C) G-G, T-T. D) A-G, C-T. Show Answer Correct Answer: A) A-T, G-C. 11. A codon is a: A) Series of two letter sequences. B) Series of three letter sequences. C) Series of four letter sequences. D) Made up biology word. Show Answer Correct Answer: B) Series of three letter sequences. 12. The most abundant structural protein in the human body is found in ligaments and skin. What is the name of this protein? A) Collagen. B) Hemoglobin. C) Myoglobin. D) Immunoglobulin. Show Answer Correct Answer: A) Collagen. 13. The production of mature mRNA in eukaryotes involves A) Cutting introns out and spicing exons together. B) Adding the 5' cap. C) Adding the 3' poly A tail. D) All of these are correct. Show Answer Correct Answer: D) All of these are correct. 14. What are the code "words" of the genetic code? A) Operator. B) Anticodon. C) Codon. D) RNA. Show Answer Correct Answer: C) Codon. 15. Genes determine inherited traits such as eye color. Genes contain the information needed to form which of the following? A) Chromosomes. B) Proteins. C) Carbohydrates. D) Hormones. Show Answer Correct Answer: B) Proteins. 16. What is the purpose of transduction? A) Send a signal to a target cell. B) Respond to a signal pass along internally. C) Pass along a signal through the cell to the location where the cell response will occur. D) None of above. Show Answer Correct Answer: C) Pass along a signal through the cell to the location where the cell response will occur. 17. What is an example of a protein? A) Strawberries. B) Bread. C) Pasta. D) Steak. Show Answer Correct Answer: D) Steak. 18. If DNA has a strand with a sequence of GCT - ACC - AAT - GCG, the replicated DNA strand would be: A) GCG - TAA - CCA - TCG. B) CGA - UGG - UUA - GCG. C) CGA - TGG - TTA - CGC. D) CGG - TAA - TAA - CGC. Show Answer Correct Answer: C) CGA - TGG - TTA - CGC. 19. In what organelle is the genetic material found inside? A) Endoplasmic Reticulum. B) Golgi Complex. C) Nucleolus. D) Nucleus. Show Answer Correct Answer: D) Nucleus. 20. HISTORY: Built the first correct model of DNA A) Watson and Crick. B) Linnus Pauling. C) Rosalind Franklin. D) Hershey and Chase. Show Answer Correct Answer: A) Watson and Crick. ← 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