bio9

 
 Explain and differentiate between sterilization and commercial sterilization.  What organism does commercial sterilization aim to destroy?  
 
 
 
 Describe three (3) different physical methods of controlling microbial growth:  
 
 
 Describe three (3) different chemical methods of controlling microbial growth:  
 
 
 Briefly summarize the 4 (four) different Biosafety levels. Give examples of microorganisms studied in each level:  
 
 
 What is the Kirby Bauer Disc diffusion method?  How it is used to determine antibiotic efficacy?  

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