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microbio quiz #1

labs 1 & 2

QuestionAnswer
prokaryotes no membrane bound nucleus or organelles (bacteria)
eukaryotes have a nucleus + organelles (fungi, protozoans, parasites)
viruses are composed of nucleic acid surrounded by a protective protein coat or phospholipid bilayer
how is detection of microbes achieved swabbing
simple vs compound microscopes 1 lens vs multiple lens
who invented the first microscope? anton van leeuwenhoek
amoeba single celled eukaryotic organism; freshwater environments; forms pseudopods
yeast unicellular, eukaryotic fungus; grows naturally on fruit surfaces; reproduces asexually; ferments sugars to produce ethanol and CO2
mold multicellular fungi organized into a network of filaments called mycelium
hyphae individual filaments that absorb nutrients
penicillium reproduces asexually; og source of penicillin
flagellates eukaryotic parasites that move by flagella
most rods belong to the family enterobacteriaceae
bacillus gram + bacteria that are long, rod shaped, and form chains
staphylococcus forms clusters
streptococcus forms chains
gram - coccus causes gonorrhea and meningitis
mesophiles grow at room temp (20-25C) to body temp (37C)
psychrophiles grow at low temps (4*C)
thermophiles grow at high temps (50*)
aerobic need oxygen to grow
anaerobic grow without oxygen
facultative can grow in anaerobic and aerobic conditions
capnophilic grow in high concentrations of CO2
broth liquid medium
agar solid medium; polysaccharide from seaweed
TSA/ TSB trypticase soy agar/ broth; nutrients from soybeans grow a wide variety of bacteria
SBA sheep's blood agar; addition of 5% sheep's blood to TSA
BHI brain heart infusion; supports the growth of most bacteria with cow brains and hearts
what tool is used to move bacteria? inoculating loop
what tool is used to inoculate a deep/ stab? inoculating needle
what technique is used to separate bacteria? streaking plates
Created by: kingsleya27
 

 



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