Virus And Bacteria Quiz 41 (20 MCQs)

Quiz Instructions

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1. Which pathogen needs a host cell to reproduce?

Correct Answer: A) Virus.

2. ..... is when every member of a species has died.

Correct Answer: B) Extinction.

3. Conjugation

Correct Answer: A) Increases genetic variation.

4. A way to prevent viruses where a weakened pathogen is introduced to the body is a(n)

Correct Answer: D) Vaccine.

5. Which BEST describes the treatment of a bacterial infection?

Correct Answer: B) Antibiotics.

6. Which of the following move using a whiplike structure?

Correct Answer: C) Flagellate.

7. What do you need to be able to see bacteria?

Correct Answer: A) Microscope.

8. Antibiotics only work against what organisms?

Correct Answer: B) Bacteria.

9. Organisms such as fungi return chemicals to the soil and the atmosphere and are called .....

Correct Answer: B) Decomposers.

10. This type of medicine only kills bacteria cells

Correct Answer: C) Antibiotics.

11. Similar genes are evidence of .....

Correct Answer: B) Common ancestory.

12. The region inside the cell membrane of a bacterium

Correct Answer: C) Cytoplasm.

13. What do viruses and bacteria have in common?

Correct Answer: D) Genetic material.

14. Which is the easiest way for a person to prevent microbial infections?

Correct Answer: D) Wash hands frequently with hot water and soap.

15. Antibiotics are used to-

Correct Answer: B) Kill a bacteria that infects an organism.

16. The dreaded human disease, Syphilis, is caused by.

Correct Answer: A) A bacterium.

17. Which shape describes some bacterial cells?

Correct Answer: C) Spiral.

18. In the levels of classification, what comes after phylum?

Correct Answer: A) Class.

19. What cells are infected by HIV?

Correct Answer: B) Helper T Cells.

20. Bacteria can cause infections in:

Correct Answer: D) All of the above.