This quiz works best with JavaScript enabled. Home > Biology > Molecular > Molecular Biology – Quiz 23 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 23 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The process in which the nucleic acid sequence information is changed into amino acid sequence is A) Replication. B) Transcription. C) Translation. D) Breaking the code. Show Answer Correct Answer: C) Translation. 2. Which of the following statements regarding mRNA is correct? A) Exons are included in the protein sequence, while introns are left out. B) Introns are included in the protein sequence, while exons are left out. C) Exons and Introns can both be included or left out depending on the protein. D) Exons and Introns are both part of the mRNA sequence, but only exons are part of the rRNA and tRNA. Show Answer Correct Answer: A) Exons are included in the protein sequence, while introns are left out. 3. Offspring that result from asexual reproduction? A) Are produced by one parent but are very different from the parent. B) Are produced by two parents but are very different from the parent. C) Are produced from one parent and have the same traits as that parent. D) Are produced from two parents and have some of the traits of each parent. Show Answer Correct Answer: C) Are produced from one parent and have the same traits as that parent. 4. A plant is exposed to increasing light intensity from very dim to bright light, while the carbon dioxide concentration and temperature are kept at an optimum level. What will happen to the rate of oxygen production? A) It will increase exponentially. B) It will remain constant. C) It will decrease to a minimum level. D) It will increase to a maximum level. Show Answer Correct Answer: D) It will increase to a maximum level. 5. Base pairing means matching a DNA nucleotide base with its complement (A-T and G-C). How is base pairing involved in DNA replication? A) Base pairing is how chromosomes are formed. Chromosome formation is needed before DNA replication can begin. B) In replication, base pairing ensures that the new complementary strands are identical to the original strands. C) In replication, base pairing ensures that the new complementary strands are the complement and not identical to the original strands. D) In replication, base pairing ensures that mutations are found and corrected before the DNA copies itself. Show Answer Correct Answer: C) In replication, base pairing ensures that the new complementary strands are the complement and not identical to the original strands. 6. In her biology class, Natasha has been asked to complete a strand of DNA with appropriate nucleotides. If half of the strand is A-T-C-C-G-A-T-C, what would she write for the other half? A) T-U-G-C-G-U-A-G. B) T-A-G-C-C-T-A-C. C) T-U-G-G-C-T-U-G. D) T-A-G-G-C-T-A-G. Show Answer Correct Answer: D) T-A-G-G-C-T-A-G. 7. What type of macromolecule are restriction enzymes? A) Nucleic acid. B) Carbohydrate. C) Protein. D) Lipid. Show Answer Correct Answer: C) Protein. 8. What does transgenic mean? A) An organism that can change its genes at will. B) A stem cell that can differentiate into anything. C) An organism that has had another species' DNA put in it. D) A bacteria that reproduces asexually. Show Answer Correct Answer: C) An organism that has had another species' DNA put in it. 9. Protein synthesis takes place on the A) Plasma membrane. B) Nucleus. C) Ribosomes. D) Microbodies. Show Answer Correct Answer: C) Ribosomes. 10. Which best describes the primary function of carbohydrates in an animal cell? A) To provide cellular energy. B) To store cellular information. C) To store energy within the cell. D) To provide structure to the cell membrane. Show Answer Correct Answer: A) To provide cellular energy. 11. What are the nucleotides made of? A) Sugar, Phosphate, nitrogen base. B) Phosphate, Adenine, nitrogen base. C) Thymine, Adenine, Cytomine. D) Phosphate, Nitrogen, Adenine. Show Answer Correct Answer: A) Sugar, Phosphate, nitrogen base. 12. What does "universal genetic code" mean? A) All living organisms have the same DNA. B) All human cells have the same 46 chromosomes. C) All species use the same DNA codon amino acid pairings. D) Living organisms share a common ancestor. Show Answer Correct Answer: C) All species use the same DNA codon amino acid pairings. 13. The sugar in RNA is: A) Uracil. B) Thymine. C) Ribose. D) Deoxyribose. Show Answer Correct Answer: C) Ribose. 14. What form of energy is stored in glucose? A) Solar energy. B) Chemical energy. C) Mechanical energy. D) Thermal energy. Show Answer Correct Answer: B) Chemical energy. 15. D-loop replication is take place in A) Nuclear DNA. B) Mitochondrial DNA. C) Plasmid DNA. D) Bacterial DNA. Show Answer Correct Answer: B) Mitochondrial DNA. 16. Excision and insertion of a gene is called A) Biotechnology. B) Genetic engineering. C) Cytogenetics. D) Gene therapy. Show Answer Correct Answer: B) Genetic engineering. 17. Human Genome A) All of the exons in the DNA. B) All of the DNA in a human organized and readable. C) All of the introns in the DNA. D) None of above. Show Answer Correct Answer: B) All of the DNA in a human organized and readable. 18. Photosynthesis occurs in A) Chloroplasts. B) Mitochondria. C) Golgi aparatus. D) Thylakoid. Show Answer Correct Answer: A) Chloroplasts. 19. What is the basic unit of a nucleic acid? A) Nucleotide. B) Amino acid. C) Monosaccharide. D) Fatty acid. Show Answer Correct Answer: A) Nucleotide. 20. What feature of carbon makes it most suitable as a basis for life? A) Its abundance in nature. B) Its bonding properties. C) Its teativity to light. D) Its presence in the early atmosphere of the Earth. Show Answer Correct Answer: B) Its bonding properties. ← 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