Shared Flashcard Set

Details

Ch 5
Environmental Influences and Control of Microbial Growth
23
Microbiology
Undergraduate 2
03/21/2012

Additional Microbiology Flashcards

 


 

Cards

Term
heat shock proteins
Definition
specific proteins produced when other proteins start to denature; produce chaperone proteins that help refold
Term
barophile
Definition
requires high pressure to grow
Term
3 methods used to maintain intracellular pH
Definition
proton/sodium movement
diffusion of weak acids/bases
membrane alterations
Term
H. pylori
Definition
secretes urease that creates a localized pH increase
Term
sterilization
Definition
kills all living organisms
Term
disinfection
Definition
kills or removes pathogens from inanimate objects
Term
antiseptic
Definition
kills or removes pathogens from living tissue
Term
sanitation
Definition
reduces microbial numbers to safe levels
Term
osmolarity
Definition
refers to solute concentrations
Term
osmoprotectants
Definition
counteract the effects of water leaving
Term
aerobic respiration
Definition
uses oxygen as final e- acceptor
Term
anaerobic respiration
Definition
uses N, S, Mg, Fe, CO2, etc. as final e- acceptor
Term
fermentation
Definition
no external e- acceptor
still need some way to regenerate cofactors--> uses something made in pathway (often pyruvate)
Term
superoxide dismutase
Definition
2O2- + 2H+ --> H2O2 + O2
Term
catalase
Definition
2H2O2 --> 2H2O + O2
Term
oligotrophs
Definition
organisms with a high growth rate at low [substrate]
Term
disinfection
Definition
kill or remove pathogens from inanimate objects
Term
antisepsis
Definition
kill or remove pathogens from living tissue
Term
sanitation
Definition
reduce microbial numbers to safe levels
Term
sterilization
Definition
kills all living organisms
Term
pasteurization
Definition
low heat treatment used to reduce microbial numbers
Term
filtration
Definition
removal of microbes based on size
Term
pen
Definition
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