This quiz works best with JavaScript enabled. Home > Biology > Molecular Biology – Quiz 43 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 43 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. MRNA is shorter than hnRNA due to A) Capping. B) Polyadenylation. C) Splicing. D) Transcription. Show Answer Correct Answer: C) Splicing. 2. Provides energy to the cell by transforming food into ATP A) Nucleus. B) Mitochondria. C) Chloroplast. D) Cell membrane. Show Answer Correct Answer: B) Mitochondria. 3. How many moles of KI are present in 0.85 L of a 0.55 M KI solution? A) 3.10 mols. B) 0.935 mols. C) 0.4675 mols. D) 1.55 mols. Show Answer Correct Answer: C) 0.4675 mols. 4. Which activity would supply the MOST oxygen to the body for digestion and respiration? A) Sit-ups. B) Running. C) Stretching. D) Lifting weights. Show Answer Correct Answer: B) Running. 5. A frameshift mutation is caused by an insertion or A) Deletion. B) Translocation. C) Inversion. D) Diversion. Show Answer Correct Answer: A) Deletion. 6. HISTORY: Took the X-Ray crystallography photographs that revealed that DNA is a Double Helix A) Rosalind Franklin. B) Linnus Pauling. C) Fredrick Griffeth. D) Martha Chase. Show Answer Correct Answer: A) Rosalind Franklin. 7. What is the verb form of the word "transcription" A) To excise. B) To transcribe. C) To transcript. D) To translate. Show Answer Correct Answer: B) To transcribe. 8. Enzyme that unwinds the DNA A) Ligase. B) DNA Polymerase. C) Primase. D) Helicase. Show Answer Correct Answer: D) Helicase. 9. What is the function of the mitochondria? A) Structure that manufactures ribosomes. B) Structures that converts molecules to ATP energy. C) Stack of membranes that packages chemicals. D) Structure that contains DNA and directs the cell. Show Answer Correct Answer: B) Structures that converts molecules to ATP energy. 10. Enzyme that breaks hydrogen bonds (unzips) A) Ligase. B) Polymerase. C) Primase. D) Helicase. Show Answer Correct Answer: D) Helicase. 11. In prokaryotes, DNA is located in the A) Cytoplasm. B) Nucleus. C) Cell membrane. D) Ribosome. Show Answer Correct Answer: A) Cytoplasm. 12. Alternative RNA splicing ..... A) Is a mechanism for increasing the rate of translation. B) Can allow the production of proteins of different sizes and functions from a single mRNA. C) Can allow the production of similar proteins from different RNAs. D) Increases the rate of transcription. Show Answer Correct Answer: B) Can allow the production of proteins of different sizes and functions from a single mRNA. 13. A substance that can cause a change in the DNA code of an organism is called a A) Toxin. B) Mutagen. C) Nitrogenous base. D) Nucleotide. Show Answer Correct Answer: B) Mutagen. 14. What does the DNA of a typical prokaryotic cell look like? A) DNA is found in the cytoplasm as a single circular chromosome. B) DNA is found in the nucleus in a single circular chromosome. C) DNA is found in the cytoplasm as a single X-shaped chromosome. D) DNA is found in the nucleus as a single X-shaped chromosome. Show Answer Correct Answer: A) DNA is found in the cytoplasm as a single circular chromosome. 15. Which enzyme adds base pairs to the DNA strand during DNA replication? A) Ligase. B) Primase. C) Helicase. D) DNA polymerase. Show Answer Correct Answer: D) DNA polymerase. 16. Which provides the most energy that can be used by the body when consumed? A) Mushrooms. B) Bananas. C) Lettuce. D) Water. Show Answer Correct Answer: B) Bananas. 17. The process of producing millions of copies of a specific DNA. A) PCR. B) PPA. C) RNA. D) PTB. Show Answer Correct Answer: A) PCR. 18. A strand of DNA has the following bases: ATG TCG GGA. Which of the following RNA segments correctly transcribes the original DNA A) ATG TCG GCA. B) TAC AGC CCT. C) UAC AGC CCU. D) CGA TCA CCU. Show Answer Correct Answer: C) UAC AGC CCU. 19. What might be long term adverse health effects of smoking? A) High blood pressure. B) Heart disease. C) Lung disease. D) All of the above. Show Answer Correct Answer: D) All of the above. 20. What important mineral is found in the dairy group? A) Vitamin c. B) Fiber. C) Dairy. D) Calcium. Show Answer Correct Answer: D) Calcium. ← PreviousNext →Related 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 9Molecular Biology Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books