exam 3 notebook notes (Fungi) Flashcards
what are the 2 groups of fungi?
molds and yeasts
what are the gneral characteristics of fungi?
eukaryotic non-photosynthetic role in nature: saprophyte (98%) opportunistic pathogen (2%) pH 5-6
what are the characteristics of mold?
mycelium (mold colony)
multicellular
hyphae (microscopic filaments; septate and non-septate)
what are the characteristics of yeast?
unicellular
oval shaped w/ vacuoles and nucleus
2 types - false and true
what is an example of a true yeast?
Sacchromyces cerevisiae
what is an example of a false yeast?
Condida albicans
what are the 2 structures to dimoprhism?
characteristics of most pathogenic fungi
temp (25C = mold phase, 37C = yeast phase)
what are the 4 phylum groups?
zygomycota
ascomycota
basidiomycota
deuteromycota
what are the phylum groups based on?
sexual spores
which phylum group is the only one with non-septate hyphae?
zygomycota
which phylum group is the only one that doesn’t have a sexual spore?
deuteromycota
what is zygomycota’s sexual spore?
zygospore
what is zygomycota’s asexual spore?
sporangiospore
what is an example of a zygomycota?
Rhizopus nigricans
what is ascomycota’s sexual spore?
ascospore
what is ascomycota’s asexual spore?
conidiospore
what is an example of an ascomycota?
Aspergillus niger (black mold) Aspergillus fumigatus (balck mold) Aspergillus flavis (yellow mold)
what is aflotoxin?
a neurotoxin that inhibits DNA, RNA, and protein synthesis
what is basidiomycota’s sexual spore?
basidiospore
what is basidiomycota’s asexual spore?
conidiospore
what is an example of basidiomycota?
mushrooms, neurotoxins
what is deuteromycota also known as?
taxonomic dump heap
which phylum is the majority of pathogenic fungi?
deuteromycota
- molds
- false yeast
