Study notes for midterm

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Department
Molecular Genetics and Microbiology
Course
MGY377H1
Professor
William Navarre
Semester
Fall

Description
14Need for microbial growth control Decline in bacterialrelated deaths because of water chlorination milk pasteurization sewage treatment vaccinations antibiotics isolation of patients Microbial growth control Physical methods Chemical methods Antimicrobial chemotherapy Heat sterilization Most common method Works for all microbes at right temp Causes denaturation Death from heat is exponential Dtime for 1 log drop in bacterial numbers o 1D10 survivors o 2D1Factors affecting heat sterilizationo Moist heat better than dry heatmore penetratingo Matrix medium effectso pH effects o solute effects o higher temp faster killingo ex Via autoclave
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