This quiz works best with JavaScript enabled. Home > Agriculture > Biology > Molecular > Molecular Biology – Quiz 34 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 34 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which scientist(s) determined that DNA replication was a semi-conservative process? A) Meselson & Stahl. B) Hershey & Chase. C) Griffith. D) Chargaff. Show Answer Correct Answer: A) Meselson & Stahl. 2. Which most directly controls the rate as which food is broken down to release energy? A) Enzymes. B) Nucleic acids. C) Vitamins. D) Hormones. Show Answer Correct Answer: A) Enzymes. 3. What is correct function for a carb? A) Build and repair body tissues. B) Body's main source of energy. C) Helps keep immune system functioning. D) Cushions organs. Show Answer Correct Answer: B) Body's main source of energy. 4. Short strands of --- primer are used in DNA replication. A) RNA. B) Histone. C) DNA. D) Protein. Show Answer Correct Answer: A) RNA. 5. What are the building blocks of all Carbohydrate? A) Glucose. B) Amino acid. C) Fatty acid. D) Glycerol. Show Answer Correct Answer: A) Glucose. 6. A strand of DNA has the following base sequence. ACG-GTA-AGC. What would be the complementary mRNA strand? A) TGC-CAT-TCG. B) ACG-GUA-AGC. C) ACG-GTA-AGC. D) UGC-CAU-UCG. Show Answer Correct Answer: D) UGC-CAU-UCG. 7. What is replicated by a semi-conservative process? A) Messenger RNA (mRNA) only. B) Messenger RNA (mRNA) and transfer RNA (tRNA) only. C) Messenger RNA (mRNA), transfer RNA (tRNA) and DNA only. D) DNA only. Show Answer Correct Answer: D) DNA only. 8. Which of the following is NOT a characteristic that prokaryotes and eukaryotes share? A) Nucleus. B) Ribosomes. C) Cell membrane. D) DNA or RNA. Show Answer Correct Answer: A) Nucleus. 9. Which do DNA and RNA have in common? A) Both are double stranded. B) Both contain ribose molecules. C) Both contain phosphate groups. D) Both contain uracil. Show Answer Correct Answer: C) Both contain phosphate groups. 10. The enzyme that catalyses the first step of carbon fixation in photosynthesis A) Proteome. B) Spider silk. C) Rubisco. D) Rhodopsin. Show Answer Correct Answer: C) Rubisco. 11. The coming together of a substrate and the enzyme's active site is known as A) Activation energy. B) Denaturation. C) Collision. D) Increasing pH. Show Answer Correct Answer: C) Collision. 12. Transposons in bacteria usually carry additional gene for A) Plasmid resistance. B) DNA resistance. C) Antigen resistance. D) Antibiotic resistance. Show Answer Correct Answer: D) Antibiotic resistance. 13. An addition of two bases to a gene is called a A) Frameshift mutation. B) Silent mutation. C) Deletion mutation. D) Point mutation. Show Answer Correct Answer: A) Frameshift mutation. 14. When can a mutation be passed on to offspring? A) Only when the mutation is present during or occurs during mitosis. B) When the mutation occurs in somatic cells. C) When the mutation occurs during mitosis or meiosis. D) Only when the mutation is present during or occurs during meiosis. Show Answer Correct Answer: D) Only when the mutation is present during or occurs during meiosis. 15. .....cell-surface receptors with intracellular domains that have intrinsic enzymatic activity. A) Receptor Tyrosine Kinases (RTKs). B) G-coupled proteins receptors. C) Intracellular receptors. D) Cell surface receptors. Show Answer Correct Answer: A) Receptor Tyrosine Kinases (RTKs). 16. What are the products of cellular respiration? A) Oxygen and Sugar. B) Oxygen and Water. C) Carbon Dioxide and Sugar. D) Carbon Dioxide and Water. Show Answer Correct Answer: D) Carbon Dioxide and Water. 17. Which of the following is a "sometimes" food? A) Chicken. B) Soup. C) Doughnut. D) Salad. Show Answer Correct Answer: C) Doughnut. 18. Which of these is NOT part of a nucleotide? A) Glucose. B) Phosphate group. C) Nitrogenous base. D) 5-carbon sugar. Show Answer Correct Answer: A) Glucose. 19. Which of the following terms is most closely associated with a tRNA molecule? A) Anticodon. B) Codon. C) Ribosome. D) Transcription. Show Answer Correct Answer: A) Anticodon. 20. Which of the following best describes the function of DNA? A) DNA codes for mRNA which determines the properties and traits of an organism. B) DNA codes for the amino acid sequences of the body's proteins. Proteins determine the traits of an organism. C) DNA codes for tRNA which then determines the traits of all organisms. D) MRNA codes for DNA which then determines the amino acid sequence of the body's proteins. Show Answer Correct Answer: B) DNA codes for the amino acid sequences of the body's proteins. Proteins determine the traits of an organism. 21. What is the product of translation? A) MRNA. B) Proteins. C) TRNA. D) DNA. Show Answer Correct Answer: B) Proteins. 22. DNA consists of two antiparallel strands of nucleotide chains held together by A) Covalent bonds. B) Hydrogen bonds. C) Ionic bonds. D) Peptide bonds. Show Answer Correct Answer: B) Hydrogen bonds. 23. Name the interaction between amino acid in protein synthesis A) Covalent bond. B) Peptide bond. C) Hydrogen bond. D) Van Der Waals. Show Answer Correct Answer: B) Peptide bond. 24. Which statement regarding viruses is true? A) A virus can only reproduce inside of a living cell. B) Viruses do not contain DNA. C) Viruses are unicellular. D) Viruses are generally larger than cells. Show Answer Correct Answer: A) A virus can only reproduce inside of a living cell. 25. An example of a hydrophobic molecule is A) Salt. B) Oil. C) Glucose. D) Cellulose. Show Answer Correct Answer: B) Oil. 26. On the leading strand, DNA is: A) Copied backwards in pieces. B) Discarded. C) Not copied. D) Copied continuously. Show Answer Correct Answer: D) Copied continuously. 27. This process produces cells with only 1/2 of the chromosomes as body cells. A) Apes. B) Meiosis. C) Monkeys. D) Mitosis. Show Answer Correct Answer: B) Meiosis. 28. Which would be the best evidence that a cell is using active transport to move a substance across its cell membrane? A) ATP is being rapidly consumed near the cellular membrane. B) Substance are moving from high to low concentrations. C) Substances are moving through channels in the cell membrane. D) Substances are moving rapidly across the cell membrane. Show Answer Correct Answer: A) ATP is being rapidly consumed near the cellular membrane. 29. What is the process of making an RNA copy of a gene? A) Translation. B) Replication. C) Nucleosomes. D) Transcription. Show Answer Correct Answer: D) Transcription. 30. Which of the following carries amino acids to the site of protein synthesis? A) TRNA. B) MRNA. C) RRNA. D) NRNA. Show Answer Correct Answer: A) TRNA. ← 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