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Microbio - Chap 8

QuestionAnswer
Psychrophiles 0-20 degrees C, opt = 15
mesophiles 20-4 degrees C, opt = 37
thermophiles 45 degrees higher C, opt = 55
psychotrophs 0-30 degrees C
most bacteria grow in what ph 6.5-7.5
molds/yeasts grow in what ph 5-6
chemoheterotrophs use what? organic carbon
hypertonic causes? plasmolysis
obligate halophiles require what osmotic pressure? HIGH
what are 4 chemical requirements? carbon, nitrogen, phosphorous, sulfur
bacteria use what in biofilms? quorum sensing
capnophiles require high Co2 concentrations
CFU colony forming unit
lyophilization freeze drying
4 reproductions in bacteria? binary fission, budding, fragmentation of filaments, conidiospores
lag phase no growth, prepping for division
log phase binary fission
stationary phase growth and death are equal
death phase nutrient depletion, cells die
4 phases of bacterial growth? lag, log, stationary, death
Created by: ngrable
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