Question 1

A patient presents with a local pustule that developed into an ulcer after handling soil. Which organism is most likely responsible for this infection?

Accepted Answer

Sporothrix schenckii

Question 2

Which statement about Cryptococcus neoformans is NOT correct?

Accepted Answer

Transmission is through direct contact with an infected cat.

Question 3

Which of the following is NOT true about histoplasmosis?

Accepted Answer

It is transmitted from person to person or animal to person.

Question 4

Infection with dermatophytes is most often related to which mode of transmission?

Accepted Answer

Direct contact with moist skin or contaminated surfaces.

Question 5

Which statement about Candida albicans is NOT correct?

Accepted Answer

It causes cryptococcal meningitis.

Question 6

Which of the following is a medically important dimorphic fungus causing severe respiratory infections?

Accepted Answer

Histoplasma capsulatum

Question 7

Which fungal structure is used to identify Cryptococcus neoformans in the laboratory?

Accepted Answer

Capsule

Question 8

Which of the following statements is true regarding prions?

Accepted Answer

They are infectious protein particles.

Question 9

Which of the following helminths is identified via muscle biopsy?

Accepted Answer

Trichinella spiralis

Question 10

Which of the following is the diagnostic stage of Ascaris lumbricoides?

Accepted Answer

Ova with a bumpy outer shell in feces

Question 11

Which of the following statements about viruses is correct?

Accepted Answer

They require host cells for replication.

Question 12

Which of the following is a structure found in a virus?

Accepted Answer

Capsid

Question 13

Which of the following protozoa is a concern due to its ability to contaminate water supplies and cause diarrheal illness?

Accepted Answer

Giardia lamblia

Question 14

Which genus includes the causative agent for malaria?

Accepted Answer

Plasmodium

Question 15

Which of the following statements about Leishmania spp. is correct?

Accepted Answer

It is transmitted through the bite of a sand fly.

Question 16

Which of the following is true regarding latent viral infections?

Accepted Answer

They are slowly progressing diseases.

Question 17

Which of the following statements about the lytic cycle of bacteriophages is correct?

Accepted Answer

The host cell is lysed, releasing new phages.

Question 18

Which of the following is the definitive host for Schistosoma spp.?

Accepted Answer

Human

Question 19

Which of the following is a medically important superficial/cutaneous mycosis?

Accepted Answer

Trichophyton rubrum

Question 20

Which of the following equations correctly represents the optimal growth temperature for yeast and mold, respectively?

Accepted Answer

$$T_{yeast} = 22\ ^\circ C,\ T_{mold} = 37\ ^\circ C$$

Medically Important Fungi, Protozoa, and Helminths: Microbiology Study Guide

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