Exam 1 - Ch.12 - Characterizing and Classifying Prokaryotes Flashcards
What eukaryotic microbes are of clinic interest?
Protozoa
Fungi
Parasitic helminths
What types of reproduction occur in Eukaryotes?
Sexual and asexual
What are the varieties of asexual reproduction in Eukaryotes?
Binary fission Budding Fragmentation spore formation schizogony
How to Eukaryotes produce sexually?
By producing gametes and zygotes.
Which Eukaryotes of interest produce both asexually and sexually?
Fungi and protozoa
Which eukaryotic cells require moist environments?
protozoa
Most protozoa reproduce ____?
asexually
Protozoa typically lack a ____ and are characterized by great _____? Very few are _____.
Cell wall
morphological diversity
pathogens
All protozoa produce ____.
trophozoites
Some protozoa produce ___?
cysts
Some protozoa have this feature that actively pump water from the cells.
contractile vacuoles
What do the contractile vacuoles do for the protozoa?
Protect them from osmotic lysis.
What stage is the active mobile feeding stage of the protozoa?
Production of trophozites
What stage is the hardy resting stage (dormant) of protozoa?
Production of cysts.
What is the significance of fungi?
Produce antibiotics
Can spoil fruit, pickles, jams and jellies
What is a fungus that can cause disease in humans called?
mycoses (mycosis singular form)
What percentage of fungi can cause diseases in plants, animals, and humans?
30%
What is the non-reproductive body of a fungus called?
thallus
The thalli of molds are composed of long, branched, tubular filaments called what?
hyphae
Fungi produce two types of thalli that are called what?
dimorphic
Generally, what form of fungi cause diseases?
Yeast form
What is a tangled mess of hyphae called?
mycelium
The mycelium are typically ____.
subterranean
What are the two dimorphic forms of fungi?
Yeast-like form and
mold-like form (filamentous)
What types of reproduction occur in fungi?
Sexual and asexual
All fungi have some for of this type of reproduction.
asexual
Most forms of fungi also reproduce _____.
Sexually
Yeasts reproduce in a manner similar to prokaryotic _____.
budding
What are a series of bud that remain attached to one another in a parent cell called?
pseudohypha
What yeast is an example of pseudohypha?
Candida albicans
What types of spores do filamentous fungi produce? What do they do?
Lightweight spores that disperse over large distances.
