FUNGI B7

Question 1

fungal cell wall

Answer 1

Chitin

Question 2

cholesterol like (cell membrane)

Answer 2

ergesterol

Question 3

Can inhibit bacterial ribosome with very low toxicity, why?

Answer 3

70S (50S + 30S)

Question 4

Lipid A

Answer 4

LPS

Question 5

Acid fast=

Answer 5

Mycolic Acid

Question 6

Yeasts:

Answer 6

• Single celled
  
  • Reproduce by BUDDING (bacteria like)
  • Yeasts like to grow at parasitic form 37 degrees
  • Candida (very common yeast)
  • Cryptococcus neoformans (only yeast that has a capsule)

Question 7

If there is a yeast surrounded by a big halo it is always

Answer 7

cryptococcus…

Question 8

Histoplasmosis: hides in

Answer 8

caves and chicken coops

Question 9

Molds:

Answer 9

Filamentous fungi

- hyphae
- Grow at saprophytic 25 degrees

Question 10

What is a primary fungal pathogen?

Answer 10

-can infect a healthy person

Question 11

Number one opportunistic pathogen is:

Answer 11

Candida albicans

- in babies oral thrush
- women- vulvovaginitis

Question 12

Dimorphics may disseminate from

Answer 12

lungs to other organs

Question 13

Actinomyces and Nocardia:

Answer 13

-Looks like mycelia

Question 14

Actinomyces looks like

Answer 14

sulfur granules

Question 15

Nocardia: branching and

Answer 15

filamentous-stains partially acid fast, (often mistaken for acid fast organisms like TB, when it is NOT acid fast organism)
-can be confused with an acid fast organism

Question 16

Top 3 dermatophytes that cause Ringworm (inflamed outward-spreading lesion):

Answer 16

• Trichophyton
• Microsporum
• Epidermophyton

Question 17

Tinea capitis=
Tinea pedis=
Tinea corporis=

Answer 17

head
athletes foot
ringworm

Question 18

Onychomycosis=

Aspergillus fumigates:

Systemic mycoses-

Answer 18

toenail or finger nail

causes fungus ball in lungs

caused by dimorphic fungi