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UTK MICROBIOLOGY 210 LAB EXAM 1 QUESTIONS AND ANSWERS
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UTK MICROBIOLOGY 210 LAB EXAM 1 QUESTIONS AND ANSWERS...
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distinct nucleus - ANSWER all Eukarya have this and it's surrounded bya lipid membrane
bioremediation - ANSWER use of microbes to degrade toxic compounds
viruses - ANSWER nonliving entities that aren't members of any of the
above domains
morphologies of bacteria - ANSWER coccus, rod, and spiral
bright light microscope - ANSWER visible light rays pass through
specimen from base of microscope
objective lens - ANSWER lens that use to observe specimen
ocular lens - ANSWER lens that you look through
monocular - ANSWER one eye microscope
binocular - ANSWER two eyes microscope
light source - ANSWER at the base of the microscope
condenser - ANSWER collects and converges light rays
iris diaghram - ANSWER controls amount of light that passes through
the specimen
mechanical stage adjustment knobs - ANSWER move specimen on slide
coarse adjustment stage - ANSWER large zoom in/out
fine adjustment stage - ANSWER smaller zoom in/out
parfocal - ANSWER microscope with many objective lenses so it can just
switch easy
, total magnification - ANSWER ocular times objective lens magnification
dark-field microscope - ANSWER use light reflected off angle at
specimen, used for living and unstained cells
phase-contrast microscope - ANSWER small differences in refractive
properties allow viewing of internal structures and for motile cells
fluorescence microscope - ANSWER Fluorescent stains absorb light at
one wavelength, then emit it at another. Filters transmit only the emitted
light. Used to examine molecules within a cell
Electron Microscope (TEM vs SEM) - ANSWER TEM- electrons pass
through specimen to see internal structures
SEM- electrons scattered across cell, can see surface details
endosymbiotic theory - ANSWER helps to explain why prokaryotic
characteristics are found in eukaryotes; mitochondria and choloroplasts
Eukarya - ANSWER fungi, algae, helminths, protozoa
saprobes - ANSWER derive nourishment from nonliving or decaying
organic matter
mycorrhizal fungi - ANSWER fungi that form symbiotic relationships with
plants; fungi provide mineralized nutrients while plants provide carbs
lichens - ANSWER fungi relationship with green algae
two classifications of fungi - ANSWER molds and yeasts
molds - ANSWER multicellular, asexual and sexual, hyphae
yeasts - ANSWER unicellular, asexual budding
hyphae - ANSWER fungal filaments
septae - ANSWER cross walls that divide hyphae
coencytic - ANSWER hyphae with no septae, smooth
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