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

Correct Answer: C) Splicing.

2. Provides energy to the cell by transforming food into ATP

Correct Answer: B) Mitochondria.

3. How many moles of KI are present in 0.85 L of a 0.55 M KI solution?

Correct Answer: C) 0.4675 mols.

4. Which activity would supply the MOST oxygen to the body for digestion and respiration?

Correct Answer: B) Running.

5. A frameshift mutation is caused by an insertion or

Correct Answer: A) Deletion.

6. HISTORY: Took the X-Ray crystallography photographs that revealed that DNA is a Double Helix

Correct Answer: A) Rosalind Franklin.

7. What is the verb form of the word "transcription"

Correct Answer: B) To transcribe.

8. Enzyme that unwinds the DNA

Correct Answer: D) Helicase.

9. What is the function of the mitochondria?

Correct Answer: B) Structures that converts molecules to ATP energy.

10. Enzyme that breaks hydrogen bonds (unzips)

Correct Answer: D) Helicase.

11. In prokaryotes, DNA is located in the

Correct Answer: A) Cytoplasm.

12. Alternative RNA splicing .....

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

Correct Answer: B) Mutagen.

14. What does the DNA of a typical prokaryotic cell look like?

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?

Correct Answer: D) DNA polymerase.

16. Which provides the most energy that can be used by the body when consumed?

Correct Answer: B) Bananas.

17. The process of producing millions of copies of a specific DNA.

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

Correct Answer: C) UAC AGC CCU.

19. What might be long term adverse health effects of smoking?

Correct Answer: D) All of the above.

20. What important mineral is found in the dairy group?

Correct Answer: D) Calcium.