1. How do antiviral drugs act?

a. They interfere with cell wall development.

b. They decrease cell membrane permeability.

c. They destroy new, immature viral particles.

d. They reduce the rate of viral replication.

ANS: D

2. Which statement applies to yeasts?

a. They are usually considered to be pathogenic.

b. They seldom contain a distinct nucleus.

c. They may cause opportunistic infection in the body.

d. They are normally not found in large numbers in resident flora.

ANS: C

3. Fungi reproduce by:

1. budding.

2. extension of hyphae.

3. binary fission.

4. production of spores.

a. 1, 2

b. 2, 4

c. 1, 2, 4

d. 2, 3, 4

ANS: C

4. Which of the following is NOT classified as a protozoan agent of disease?

a. Plasmodium vivax

b. Trichomonas vaginalis

c. Tinea pedis

d. Entamoeba histolytica

ANS: C

5. Which of the following is a characteristic of rickettsia?

a. It is a very small gram-negative intracellular microbe.

b. It exists in three forms.

c. It causes sexually transmitted disease.

d. It reproduces by budding.

ANS: A

6. Entamoeba histolytica is transmitted by which of the following?

a. Mosquitoes (bites)

b. Inhaling contaminated particles

c. Sexual intercourse

d. Cysts in feces

ANS: D