Molecular Biology Quiz 50 (20 MCQs)

Quiz Instructions

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1. Which of the following involves using an RNA/protein complex to remove introns and connect exons in the RNA transcript?

Correct Answer: D) Alternative spicing.

2. James exercises for 30 minutes each day, five days a week. What would be a benefit of this lifestyle choice?

Correct Answer: C) Improvement in overall health.

3. Organelle in eukaryotic cells that is the site of cellular respiration that burns sugar with oxygen to produce energy, carbon dioxide, and water.

Correct Answer: C) Mitochondria.

4. Expressed sequences=genes. Code for polypeptide

Correct Answer: B) Exons.

5. Which of the following are basic needs for plants to make food, but not for animals.

Correct Answer: C) Sunlight, CO2, and soil.

6. How many transmembrane domain does G protein couple reveptor have

Correct Answer: C) 7.

7. The loss of enzyme shape is called

Correct Answer: A) Denaturation.

8. What is the definition of cell respiration

Correct Answer: B) The controlled release of energy of energy, in the form of ATP, from organic compounds.

9. DNA helicase, polymerase, ligase, and primase are alike in that they are all what?

Correct Answer: A) Enzymes.

10. A strand of DNA has these bases: AGC CAT GTA TAC. What is the complementary DNA strand? (3.1.1)

Correct Answer: B) TCG GTA CAT ATG.

11. What does tRNA do?

Correct Answer: B) Transfers amino acids to the ribosomes.

12. Brandon just ate celery with peanut butter on top. Did he eat any protein?

Correct Answer: B) Yes.

13. Protein Synthesis takes place at what organelle?

Correct Answer: C) Ribosome.

14. If you have a codon AUC what is the anticodon that complements it?

Correct Answer: B) UAG.

15. Which event in a cell would use ATP to maintain homeostasis?

Correct Answer: C) A cell using energy to transport a large food molecule through a protein.

16. Which organelle converts the energy in food into energy for the cell (cellular respiration)?

Correct Answer: C) Mitochondria.

17. An mRNA molecule is produced in the step of protein synthesis:

Correct Answer: B) Transcription.

18. How does a deletion mutation differ from a substitution mutation?

Correct Answer: C) Both of the above are correct.

19. Which one of the following molecules has an unbranched, linear structure?

Correct Answer: C) Amylose.

20. Which scientist(s) stated that DNA contains phosphorus while proteins contain sulfur?

Correct Answer: B) Hershey & Chase.