This quiz works best with JavaScript enabled. Home > Biology > Molecular > Molecular Biology – Quiz 39 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 39 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following units are repeatedly joined together to form a strand of DNA? A) Amino acids. B) Nucleotides. C) Fatty acids. D) Polysaccharides. Show Answer Correct Answer: B) Nucleotides. 2. Fats that provide long term energy storage A) Lipids. B) Glycogen. C) Saturated fatty acid. D) Glucose. Show Answer Correct Answer: A) Lipids. 3. Which of the following is/are true of photosynthesis?I. Photolysis of CO2 provides electronsII. Electrons are needed to convert CO2 into glucoseIII. It is only carried out by plants A) I only. B) II only. C) I and II only. D) I, II and III. Show Answer Correct Answer: B) II only. 4. The separation of the two single strands of DNA creates a 'Y' shape? A) Enzyme. B) Unzip. C) A replication fork. D) None of above. Show Answer Correct Answer: C) A replication fork. 5. According to the induced fit model, as a substrate approaches an enzyme, it induces a ..... in the active site. A) Conformational change. B) Chemical change. C) Color change. D) None of above. Show Answer Correct Answer: A) Conformational change. 6. Which part of an amino acid varies? A) Hydroxyl. B) R-group. C) Carbonyl. D) C-C-N backbone. Show Answer Correct Answer: B) R-group. 7. Which is transported in the blood in lipoprotein droplets? A) Amino acids. B) Sodium ions. C) Glucose. D) Cholesterol. Show Answer Correct Answer: D) Cholesterol. 8. STRUCTURE: What Nitrogenous Base does RNA contain that DNA does not? A) Thymine. B) Uracil. C) Adenine. D) Love. Show Answer Correct Answer: B) Uracil. 9. Which best explains why some fats are recommended as part of a healthy diet? A) Fats provide the body with the chemicals necessary for controlling the pH of the blood. B) Fats act as a catalyst, reacting with the sugars in fruits and vegetables. C) Fats provide the body and its organs with insulation and protection. D) None of above. Show Answer Correct Answer: C) Fats provide the body and its organs with insulation and protection. 10. Which of these nitrogenous bases is NOT in DNA? A) Uracil. B) Thymine. C) Cytosine. D) Guanine. Show Answer Correct Answer: A) Uracil. 11. Carbon is the basis of biological polymers becauseI It can form chains by bonding to other carbon atomsII It is found in carbohydratesIII It can form four covalent bonds A) I only. B) I and II only. C) I and III only. D) I, II and III. Show Answer Correct Answer: C) I and III only. 12. RRNA is A) Made in the nucleolus. B) Part of a ribosome. C) Not made into protein. D) All of the above. Show Answer Correct Answer: D) All of the above. 13. If a piece of double stranded DNA has 30% G's, what percentage of the DNA is T's? A) 10%. B) 20%. C) 30%. D) 40%. Show Answer Correct Answer: B) 20%. 14. What is the name of the binding site of RNA polymerase in eukaryotes? A) Operator. B) Operon. C) Inducer. D) Promoter. Show Answer Correct Answer: D) Promoter. 15. What mutation is a deletion or insertion of one or more nucleotides that changes the reading frame of the base sequence? A) Splicing. B) Frameshift. C) Elongation. D) Mutagen. Show Answer Correct Answer: B) Frameshift. 16. The process of creating a protein from RNA is called A) Transcription. B) Translation. C) Replication. D) Reverse transcription. Show Answer Correct Answer: B) Translation. 17. Which of the following features is/are present in mitochondria but not in chloroplasts?I. DNA and ribosomesII. Outer and inner membranesIII. Cristae A) I only. B) II only. C) III only. D) I and III only. Show Answer Correct Answer: C) III only. 18. What enzyme keeps DNA from overwinding ahead of replication forks? A) Primase. B) Topoisomerase. C) Single-Stand Binding Protein. D) Helicase. Show Answer Correct Answer: B) Topoisomerase. 19. Fish, nuts, oils and avocado are health sources of..... A) Fiber. B) Protein. C) Minerals. D) Fat. Show Answer Correct Answer: D) Fat. 20. Which best describes the process of photosynthesis? A) Carbon dioxide and oxygen are converted into glucose and water. B) Carbon dioxide and water are converted into glucose and oxygen. C) Oxygen and glucose are converted into carbon dioxide and water. D) Oxygen and water are converted into carbon dioxide and glucose. Show Answer Correct Answer: B) Carbon dioxide and water are converted into glucose and oxygen. ← 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