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Micro Quiz
terms in lab book
34
Nursing
Graduate
02/07/2012

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Term
aerotolerance
Definition
ability or inability to live in the presence of oxygen
Term
aerobic
Definition
like oxygen, oxygen on top
Term
anaerobic
Definition
dont like oxygen, oxygen on bottom
Term
obligate aerobes
Definition
grow at top where oxygen is most plentiful
Term
facultative and aerotolerant anaerobes
Definition
organisms that dont require oxygen
Term
microaerophiles
Definition
require a reduced level of oxygen (somewhere in the middle)
Term
obligate anaerobes
Definition
organisms taht inhabit the lower regions, oxygen-free environment
Term
capnophiles
Definition
can survive only in carbon dioxide levels are elevated
Term
cardinal temperatures
Definition
minimum, maximum, and optimum temperatures
Term
psychrophiles
Definition
only grow below 20 degrees celcius, common in ocean, premanently cold
Term
psychtotrophs
Definition
fluctuate from 0-30 degrees celcius
-food spoilage
Term
mesophiles
Definition
15-45 degrees celcius, human body
Term
thermophiles
Definition
temps above 40 degress celcius, composting organic material and hot springs.. they grow best at above 80 degrees celcius
Term
turgor pressure
Definition
require water to maintain cellular
-prokaryotes, like plants
Term
plasmolysis
Definition
eukaryotic cells, influx of water, prevent shrinking of cell membrane, seperation from the cell wall
Term
diffusion
Definition
water with potassium and sodium ion concentration
Term
things move
Definition
from low concentration to high concentration
Term
osmosis
Definition
high to low
Term
osmotic pressure
Definition
force that contains it, pulls water towards itself
Term
hyposomotic
Definition
low osmotic pressure, net movement of water into the cell (swell)
Term
hyperosomotic
Definition
high osmotic pressure, net movement of water out of the cell, (shrink)
Term
isosmotic
Definition
osmotic pressure equal to that of cell, water will move in both directions equally, no net movement
Term
halophiles
Definition
grow optimally in NaCl 3% or greater
Term
extreme halophiles
Definition
from 15% up to 25% and won't survive where its lower than that..HIGH osmotic pressure..salt loving
Term
osmotolerant bacteria
Definition
wide range of salinities, where NaCl concentrations are less than 3%
Term
decontamination
Definition
reduction of pathogenic microorganisms to a level at which is safe without protective attire
Term
disinfection
Definition
effectiveness against specific control pathogens
Term
antiseptics
Definition
reduce or eliminate pathogens
Term
chemical sterilants
Definition
high level disinfections, kills all vegetative cells and spores
Term
sterilization
Definition
complete elimination
Term
heterotroph
Definition
get their carbon from an organic source
Term
autotrophs
Definition
get their carbon from CO2
Term
extremophiles
Definition
inhabit extreme environments
Term
extreme thermophiles
Definition
live at extremely high temperatures, heat loving
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