This quiz works best with JavaScript enabled. Home > Agriculture > Biology > Molecular > Molecular Biology – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 10 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When an electrical current is used to separate a mixture of DNA..... A) Restriction maps. B) Gel electrophoresis. C) Electron map. D) Electricity. Show Answer Correct Answer: B) Gel electrophoresis. 2. How would the DNA sequence GCTATA be transcribed to mRNA? A) CGATAT. B) GCUTUT. C) GCUAUA. D) CGAUAU. Show Answer Correct Answer: D) CGAUAU. 3. The scientist(s) responsible for the the discovery of bacterial transformation involving bacteria-causing pneumonia in mice is (are) A) Watson and Crick. B) Avery. C) Griffith. D) Franklin. Show Answer Correct Answer: C) Griffith. 4. What is the shape of a glucose molecule? A) Hexagon. B) Octagon. C) Straight chain. D) Pentagon. Show Answer Correct Answer: A) Hexagon. 5. How can sticky ends be used? A) To join pieces of DNA from different sources. B) To destroy DNA. C) To cut the DNA using restriction enzymes. D) None of above. Show Answer Correct Answer: A) To join pieces of DNA from different sources. 6. Lipids that are healthier for your body are ..... A) Unsaturated fat. B) Saturated fat. C) Available at mcdonalds. D) Transfat. Show Answer Correct Answer: A) Unsaturated fat. 7. Cellulose is an important component of a plant's cell wall and is made up of repeating units of carbon, hydrogen, and oxygen. What type of organic molecule is cellulose? A) Nucleic acid. B) Lipid. C) Protein. D) Carbohydrate. Show Answer Correct Answer: D) Carbohydrate. 8. Building a healthy plate can help you avoid: A) Obesity. B) Diabetes. C) Reduce risk of Heart disease. D) All. Show Answer Correct Answer: D) All. 9. Which of the following are not the components of RNA? A) Thymine. B) Adenine. C) Cytosine. D) Guanine. Show Answer Correct Answer: A) Thymine. 10. TRANSLATION:Translation occurs in the: A) Cell membrane. B) Office. C) Cytoplasm. D) Nucleus. Show Answer Correct Answer: C) Cytoplasm. 11. Which nucleic acids are directly involved in transcription? A) MRNA and one DNA strand. B) MRNA and both DNA strands. C) TRNA and both DNA strands. D) TRNA and one DNA strand. Show Answer Correct Answer: A) MRNA and one DNA strand. 12. The defining property of transposable elements is A) Non - motility. B) Motility. C) Non - replicative. D) Replicative. Show Answer Correct Answer: B) Motility. 13. What is the template for mRNA? A) Proteins. B) RRNA. C) DNA. D) TRNA. Show Answer Correct Answer: C) DNA. 14. What happens in Translocation? A) They all live normaly. B) They all repeat each other. C) Different chromosomes cross-over with each other. D) Something happens. Show Answer Correct Answer: C) Different chromosomes cross-over with each other. 15. Which was most likely the earliest way biotechnology was used by humans? A) Finding evidence for crimes. B) Making medicines to cure sickness. C) Discovering the cause of hereditary diseases. D) Breeding better varieties of crops and livestock. Show Answer Correct Answer: D) Breeding better varieties of crops and livestock. 16. RNA primase is used show where DNA polymerase III is to attach to add nucleotides on the exposed lagging strand. What is the name of the promoter strand on the DNA lagging strand called? A) Topoisomerase. B) Primer. C) TATA box. D) Telomere. Show Answer Correct Answer: C) TATA box. 17. Which is NOT part of cellular respiration? A) Catabolism of organic compounds. B) Energy release. C) Production of oxygen. D) Production of ATP. Show Answer Correct Answer: C) Production of oxygen. 18. Which best describes the technique of genetic engineering? A) Manufacturing synthetic DNA in the lab from chemicals. B) Cutting out segments of DNA under a microscope. C) Introducing foreign DNA into an organism in order to modify the organism's DNA. D) Exposing the DNA of an organism to radiation to produce mutations. Show Answer Correct Answer: C) Introducing foreign DNA into an organism in order to modify the organism's DNA. 19. Which is LEAST likely to limit the rate of photosynthesis in a plant? A) Temperature. B) Light intensity. C) PH. D) Carbon dioxide concentration. Show Answer Correct Answer: C) PH. 20. Which can be explained by the solvent properties of water? A) Sodium chloride is transported as Na+ and Cl- in blood. B) Movement of water occurs under tension in the xylem. C) Water is the coolant in sweat. D) Ice floats on liquid water. Show Answer Correct Answer: A) Sodium chloride is transported as Na+ and Cl- in blood. 21. The most commonly occurring mutation in people with cystic fibrosis is a deletion of a single codon. This results in A) A base-pair substitution. B) A frameshift mutation. C) A nucleotide mismatch. D) A polypeptide missing an amino acid. Show Answer Correct Answer: D) A polypeptide missing an amino acid. 22. According to Chargaff's rule, what percentage of cytosine would be found in the DNA of a bacterium if it has 13% adenine? A) 26%. B) 74%. C) 30%. D) 37%. Show Answer Correct Answer: D) 37%. 23. The sugar molecule in a nucleotide is A) Triose. B) Hexose. C) Pentose. D) Tetrose. Show Answer Correct Answer: C) Pentose. 24. Which molecule brings the amino acid to the ribosome? A) DNA. B) MRNA. C) TRNA. D) RRNA. Show Answer Correct Answer: C) TRNA. 25. Genes for medically important proteins can be cloned and inserted into bacteria, as shown in the diagram below. Why can bacteria recognize a human gene and then produce a human protein? A) DNA replication in bacteria and humans is the same. B) Bacterial cells contain the same organelles as human cells. C) The basic components of DNA are the same in humans and bacteria. D) Bacterial cells contain the same organelles as chromosomes. Show Answer Correct Answer: C) The basic components of DNA are the same in humans and bacteria. 26. In DNA, A bonds to T and G bonds to C. This is called A) Binary fission. B) Recombinant frequencies. C) Polymerase chain reaction. D) Complementary base pairing. Show Answer Correct Answer: D) Complementary base pairing. 27. ..... is to transcription as ..... is to translation. A) Ribosome / Nucleus. B) Amino Acid Chain / mRNA. C) MRNA / tRNA. D) MRNA / Amino Acid Chain. Show Answer Correct Answer: D) MRNA / Amino Acid Chain. 28. Jessica does not usually exercise, but decides to begin a moderate exercise program. Which is most likely to occur in Jessica's body? A) Digestion will slow down. B) Glucose production will decrease. C) Fat and calories will be burned more rapidly. D) Additional fat reserves will be created to store excess energy. Show Answer Correct Answer: C) Fat and calories will be burned more rapidly. 29. Which of the following best explains why enzymes are necessary for many cellular reactions? A) The reactions are too slow to meet the needs of the cell if enzymes are missing. B) Enzymes change reactants from solid to liquids during the reactions. C) The reactions take up too much space in the cell if the enzymes are missing. D) Enzymes supply the oxygen necessary for the reactions. Show Answer Correct Answer: A) The reactions are too slow to meet the needs of the cell if enzymes are missing. 30. Which scientist(s) mixed a heat-killed pathogenic strain of bacteria with a living nonpathogenic strain can convert some of the living cells into the pathogenic form? A) Chargaff. B) Griffith. C) Watson & Crick. D) Meselson & Stahl. Show Answer Correct Answer: B) Griffith. ← 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