This quiz works best with JavaScript enabled. Home > Biology > Molecular > Molecular Biology – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 12 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which nutrient molecules are most closely linked to heart disease in humans? A) Fats. B) Nitrates. C) Proteins. D) Carbohydrates. Show Answer Correct Answer: A) Fats. 2. Many factors affect human health. Which term BEST describes diet and exercise for MOST adults? A) Lifestyle choice. B) Environmental factors. C) Genetic predisposition. D) Medically prescribed behavior. Show Answer Correct Answer: A) Lifestyle choice. 3. Which of the following is NOT a part of My Plate? A) Grains. B) Fruit. C) Candy. D) Protein. Show Answer Correct Answer: C) Candy. 4. Enzymes act as catalysts to ..... the rate of a biochemical reaction by ..... the activation energy needed for the reaction to occur. A) Increase, lowering. B) Decrease, lowering. C) Increase, raising. D) Decrease, raising. Show Answer Correct Answer: A) Increase, lowering. 5. What enzyme is responsible for laying down the RNA primers during DNA Replication? A) Helicase. B) RNA Primase. C) Ligase. D) There are no RNA primers during DNA Replication. Show Answer Correct Answer: B) RNA Primase. 6. The function of ..... is to combine with proteins to form ribosomes. A) RRNA. B) TRNA. C) MRNA. D) DNA. Show Answer Correct Answer: A) RRNA. 7. Prokaryotic does not have A) Membrane bound organelles. B) Cell membrane. C) DNA or RNA. D) Life. Show Answer Correct Answer: A) Membrane bound organelles. 8. The four nitrogenous bases of DNA are A) Adenine, guanine, cytosine, and uracil. B) Adenine, guanine, cytosine, and thymine. C) Adenine, guanine, ribose and deoxyribose. D) Adenine, deoxyribose, cytosine, and uracil. Show Answer Correct Answer: B) Adenine, guanine, cytosine, and thymine. 9. Phosphorylation is the process by which a ..... is added to a protein to activate it. A) Acetyl. B) Sulfate. C) Phosphate. D) None of above. Show Answer Correct Answer: C) Phosphate. 10. The five carbon sugar found in RNA A) Ribose. B) Deoxyribose. C) Glucose. D) None of above. Show Answer Correct Answer: A) Ribose. 11. Which of the following sequences of processes correctly reflects the central dogma? A) Protein synthesis, transcription, translation. B) Protein synthesis, translation, transcription. C) Transcription, translation, protein synthesis. D) Translation, transcription, protein synthesis. Show Answer Correct Answer: C) Transcription, translation, protein synthesis. 12. What advantage do SUGARS provide for an organism's diet? A) Produce ENERGY for cells. B) Provide code for DNA of offspring. C) Supply amino acids needed to build muscle tissue. D) Provide minerals needed to build strong bones. Show Answer Correct Answer: A) Produce ENERGY for cells. 13. Transcription takes place in the A) Cytoplasm. B) Ribosome. C) Mitochondrion. D) Nucleus. Show Answer Correct Answer: D) Nucleus. 14. What was Watson and Crick's main scientific accomplishment? A) Building the first accurate model of DNA. B) Isolating strains of pneumonia causing bacteria. C) Determining base pairing rules. D) Discovering the process of genetic transformation. Show Answer Correct Answer: A) Building the first accurate model of DNA. 15. An RNA molecule is A) Double helix. B) Always double stranded. C) Usually double stranded. D) Single stranded. Show Answer Correct Answer: D) Single stranded. 16. The first transposable element was discovered in A) 1930's. B) 1940's. C) 1950's. D) 1980's. Show Answer Correct Answer: B) 1940's. 17. The color of a rose in an inherited trait. The molecular basis for the expression of the color trait depends directly on which of these cell function? A) Respiration. B) Photosynthesis. C) Protein synthesis. D) Hormone production. Show Answer Correct Answer: C) Protein synthesis. 18. The "central dogma" states that genetic information flows from A) Protein-->mRNA-->DNA. B) Protein-->DNA-->mRNA. C) MRNA-->DNA-->Protein. D) DNA-->mRNA-->Protein. Show Answer Correct Answer: D) DNA-->mRNA-->Protein. 19. Which of the following is NOT a Dairy source? A) Milk. B) Yogurt. C) Cheese. D) Eggs. Show Answer Correct Answer: D) Eggs. 20. The cAMP/PKA signal transduction pathway is used in cells is an example of ..... A) "fight or flight" response. B) Changes in motility. C) Changes in gene expression. D) None of above. Show Answer Correct Answer: A) "fight or flight" response. ← 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