Virus And Bacteria Quiz 9 (20 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. What percentage of bacteria are harmful?

Correct Answer: D) Less than 1%.

2. The ecological roles filled by prokaryotes include all of the following except

Correct Answer: C) Scavengers.

3. Viruses are not alive because they do not .....

Correct Answer: B) Release energy.

4. To which group of organisms do viruses belong?

Correct Answer: D) None of these.

5. Reproduces using binary fission or conjugation

Correct Answer: B) Bacteria.

6. What process creates more viruses?

Correct Answer: C) Replication.

7. The "tail" of a prokaryotic cell that helps it move

Correct Answer: C) Flagellum.

8. Microscopic prokaryotes that can be be either autotrophs or heterotrophs belong to Kingdom

Correct Answer: A) Archaebacteria.

9. Antibiotics can cure infections caused by

Correct Answer: B) Bacteria.

10. Disease causing bacteria are called

Correct Answer: B) Pathogenic.

11. What do viruses need to reproduce, and survive?

Correct Answer: B) A host cell.

12. Which best compares bacteria and viruses?

Correct Answer: D) Bacteria are living organisms, but viruses are not.

13. A virus is ..... a cell.

Correct Answer: B) Smaller than.

14. ..... break down energy in dead things to get food.

Correct Answer: B) Fungi.

15. Which of the following is NOT found in bacteria?

Correct Answer: A) Mitochondria.

16. Which of the following lists structures from smallest to largest?

Correct Answer: D) Virus, bacteria, protist.

17. The ability of bacteria to survive and become "stronger" even after antibiotic treatment is called

Correct Answer: D) Antibiotic resistance.

18. When a virus invades a living cell, its ..... takes over the cell's functions.

Correct Answer: B) Genetic material.

19. The 3 shapes of bacteria are .....

Correct Answer: B) Rod, round (sphere), spiral.

20. Prokaryotes are unlike all other organisms in that their cells

Correct Answer: A) Do not have a nucleus.