· Use the information presented in the module folder along with your readings from the textbook to answer the following questions. 

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