mycology

Question 1

how many species of fungi cause human disease

Answer 1

~300

Question 2

the cell membrane of fungi differ from animals in that fungi cell membrane contain

Answer 2

ergosterol unlike cholesterol present in animal cell membrane

Question 3

fungi cell wall is made up of 3 complex polysaccharides which are

Answer 3

glucans (alpha and beta glucans)
chitin
mannans

Question 4

what polysaccharide on cell wall acts as a surface protein and which is usually modified to avoid easy immune detection

Answer 4

mannoproteins

Question 5

antifungal drugs e.g amphotericin usually act on what molecule to destroy fungi

Answer 5

ergosterol

Question 6

list 3 dermatophytes

Answer 6

MET
microsporum
epidermophytoon
trichophytoon

dermatophytes are molds from the phylum ascomycota
they are superficial fungi

Question 7

list an example of subcutaneous fungi

Answer 7

sporothrix
it is a dimorphic fungi belonging to phylum ascomycota

subcutaneous fungi cause infection through the skin then progress to subcutaneous tissue/lymphatic spread

Question 8

list 5 opportunistic fungi
hint: MR CAP

Answer 8

zygomycota:
mucor(mold)
rhizopus(mold)

ascomycota:
candidia (dimorphic)
aspergillus(mold)
pneumocystis(cyst)

Question 9

example of a fungi with a capsule surrounding it is

Answer 9

cryptococcus neoformana

Question 10

list 4 systemic fungi
hint: BCH-C

Answer 10

systemic fungi are endemic and are not part of the human microbiota

Blastomyces(dimorphic)
coccidiosis(dimorphic)
histoplasma(dimorphic)
Cryptococcus(yeast)

Question 11

the molds in the order mucorales are aseptate
T or F

Answer 11

T
examples include
mucor
rhizopus
rhizomucor