This quiz works best with JavaScript enabled. Home > Biology > Molecular Biology – Quiz 27 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Molecular Biology Quiz 27 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following best represents the Central Dogma? A) DNA --> RNA --> proteins. B) RNA --> DNA --> proteins. C) DNA --> proteins --> RNA. D) Proteins --> RNA --> DNA. Show Answer Correct Answer: A) DNA --> RNA --> proteins. 2. The structure made from protein and rRNA that translates mRNA into protein is A) DNA polymerase. B) RNA polymerase. C) The ribosome. D) The nucleolus. Show Answer Correct Answer: C) The ribosome. 3. Who coined the term Gene? A) Watson and Crick. B) Mendel. C) Rosalind Franklin. D) Wilhelm Johannsen. Show Answer Correct Answer: D) Wilhelm Johannsen. 4. Mutations usually ..... A) Are helpful. B) Are harmful. C) Are awesome. D) Happen spontaneously. Show Answer Correct Answer: B) Are harmful. 5. Proteins are provided by A) Dried beans, peas, and nuts. B) Milk and eggs. C) Meat, fish, and poultry. D) All choices are correct. Show Answer Correct Answer: D) All choices are correct. 6. Which best describes how organisms obtain energy from food? A) Food (Glucose) reacts with water to release energy during photosynthesis. B) Food (Glucose) reacts with oxygen to release energy (ATP) during cellular respiration. C) Food (Glucose) reacts with sunlight to release energy during photosynthesis. D) Food (Glucose) reacts with carbon dioxide to release energy during cellular respiration. Show Answer Correct Answer: B) Food (Glucose) reacts with oxygen to release energy (ATP) during cellular respiration. 7. During the lytic infection by a virus, the host cell is- A) Destroyed. B) Copied. C) Passed on to the lysogenic cycle. D) Not affected. Show Answer Correct Answer: A) Destroyed. 8. Why we need exon only in translation? A) Exon is coding sequence. B) To start initiation. C) To start the transcription. D) To terminate the transcription. Show Answer Correct Answer: A) Exon is coding sequence. 9. Which molecules are monosaccharides? A) Starch, glycogen, cellulose. B) Sucrose, maltose, lactose. C) Fructose, glucose, galactose. D) Glucose, lactose, cellulose. Show Answer Correct Answer: C) Fructose, glucose, galactose. 10. Cellular Respiration's goal is to A) Make water. B) Make ATP. C) Make glucose. D) Make oxygen. Show Answer Correct Answer: B) Make ATP. 11. Which type of diet best contributes to a healthy lifestyle? Which type of diet best contributes to a healthy lifestyle? A) A diet high in protein and fat. B) A diet high in fruits, vegetables, and fats. C) A diet high in carbohydrates, fruits, and vegetables. D) A diet high in fruits, vegetables, and lean protein. Show Answer Correct Answer: D) A diet high in fruits, vegetables, and lean protein. 12. What is another name for restriction enzymes? A) Restriction endonucleases. B) DNA polymerase. C) Ligase. D) Ligase. Show Answer Correct Answer: A) Restriction endonucleases. 13. What causes mutations? A) Mistakes in replication or environmental substances. B) The amino acids. C) Passed down by genetics. D) It's how your born. Show Answer Correct Answer: A) Mistakes in replication or environmental substances. 14. Molarity of a given phosphoric acid solution (H3PO4) is 3M. It's normality is ..... . A) 1 N. B) 2 N. C) 0.3. D) 9. Show Answer Correct Answer: D) 9. 15. What is a change in DNA called? A) Mutation. B) Anticodon. C) Codon. D) Triplet. Show Answer Correct Answer: A) Mutation. 16. DNA is the genetic information within all living cells. What is the purpose of DNA within the cell? A) DNA is the material within the cell that regulates and controls cellular activity. B) DNA is used by the cell to fight off bacterial infections. C) DNA provides energy for photosynthesis. D) DNA assembles the transport proteins in a membrane. Show Answer Correct Answer: A) DNA is the material within the cell that regulates and controls cellular activity. 17. The folding and coiling into a three dimensional structure based on interactions between R-groups is known as the ..... structure of a protein. A) Primary. B) Secondary. C) Tertiary. D) Quaternary. Show Answer Correct Answer: C) Tertiary. 18. Which genetic abnormality can be identified through karyotyping? A) Point mutation. B) Recessive allele. C) Extra chromosomes. D) Sex-linked allele. Show Answer Correct Answer: C) Extra chromosomes. 19. Which is NOT an energetic exercise? A) Playing football. B) Dancing. C) Watching TV. D) Swimming. Show Answer Correct Answer: C) Watching TV. 20. G-proteins are classified as ....., A) Heterotrimeric. B) Tetrameric. C) Trimeric. D) None of above. Show Answer Correct Answer: A) Heterotrimeric. ← 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