This quiz works best with JavaScript enabled. Home > Biology > Molecular > Molecular Biology – Quiz 45 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 45 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is NOT part of a nucleotide? A) 5-carbon sugar. B) Nitrogen base. C) Amino acid. D) Phosphate group. Show Answer Correct Answer: C) Amino acid. 2. Number of hydrogen bonds between guanine and cytosine? A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: C) 3. 3. Recombinant DNA are currently used to produce..... A) Clothing dye, cheese, and laundry products. B) Human antibiotics and vaccines. C) Crops that taste better and stay fresh longer. D) All of these. Show Answer Correct Answer: D) All of these. 4. Bread, fruit, vegetables, and starches are examples of A) Carbohydrates. B) Lipids. C) Proteins. D) None of above. Show Answer Correct Answer: A) Carbohydrates. 5. What is the function of an anticodon? A) Anticodons in tRNA form bonds with the complimentary codons in mRNA. This allows tRNA to add its amino acid to the polypeptide chain. B) It is a three-base code that specifies a particular amino acid on the mRNA. C) It is the part of the mRNA that is cut out when making a functioning protein. D) It is an enzyme that corrects a mutation of the codons on the DNA. Show Answer Correct Answer: A) Anticodons in tRNA form bonds with the complimentary codons in mRNA. This allows tRNA to add its amino acid to the polypeptide chain. 6. Which property of water accounts for its moderating effects on the Earth's atmosphere? A) Cohesive. B) Thermal. C) Transparency. D) Adhesive. Show Answer Correct Answer: B) Thermal. 7. What are the building blocks of proteins call? A) DNA. B) RNA. C) Ribosomes. D) Amino Acids. Show Answer Correct Answer: D) Amino Acids. 8. What is the name for a sequence of DNA bases? A) Gene. B) One-gene, one-protein. C) MRNA. D) TRNA. Show Answer Correct Answer: A) Gene. 9. What are the REACTANTS for cellular respiration? A) Oxygen and carbon dioxide. B) Water and glucose. C) Carbon dioxide and water. D) Glucose and oxygen. Show Answer Correct Answer: D) Glucose and oxygen. 10. Outline the central dogma of molecular biology. A) Protein ---> DNA ---> RNA. B) RNA ---> DNA ---> Protein. C) Protein ---> RNA ---> DNA. D) DNA ---> RNA ---> Protein. Show Answer Correct Answer: D) DNA ---> RNA ---> Protein. 11. Water is made up of two hydrogen atoms joined by ..... bonds to an oxygen atom. A) Covalent. B) Ionic. C) Hydrogen. D) None of above. Show Answer Correct Answer: A) Covalent. 12. Where is mRNA made? A) Nucleus. B) Cytoplasm. C) Ribosome. D) Mitochondria. Show Answer Correct Answer: A) Nucleus. 13. In eukaryotes protein synthesis happens in A) Cytoplasm. B) Nucleus. C) Cytoplasm and nucleus. D) None. Show Answer Correct Answer: C) Cytoplasm and nucleus. 14. HISTORY: Performed an experiment with Bacteriophage viruses that proved DNA was the genetic material A) Maurice Wilkens and Rosalind Franklin. B) James Watson and Francis Crick. C) Alfred Hershey and Martha Chase. D) Peanut butter and Jelly. Show Answer Correct Answer: C) Alfred Hershey and Martha Chase. 15. What is the DNA sequence or part of the gene called where transcription factors bind and signal the start of transcription. A) Start codon. B) Promoter. C) Terminator. D) Initiation. Show Answer Correct Answer: B) Promoter. 16. Which choice describes a chromosome in a prokaryotic cell? A) Linear in the nucleus. B) Circular in the nucleus. C) Linear in the cytoplasm. D) Circular in the cytoplasm. Show Answer Correct Answer: D) Circular in the cytoplasm. 17. What type of macro-molecules are DNA and RNA? A) Protein. B) Carbohydrate. C) Nucleic Acid. D) Lipid. Show Answer Correct Answer: C) Nucleic Acid. 18. Where does transcription take place? A) Nucleus. B) Ribosome. C) Cytoplasm. D) Smooth ER. Show Answer Correct Answer: A) Nucleus. 19. Process that converts radiant energy to chemical energy..... A) Photosynthesis. B) Heterotroph. C) Autotroph. D) Hypothesis. Show Answer Correct Answer: A) Photosynthesis. 20. In eukaryotes, nearly all the DNA is found in the A) Nucleus. B) Ribosomes. C) Cytoplasm. D) Histones. Show Answer Correct Answer: A) Nucleus. ← 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