TMW #4.docx - TMW HOMEWORK#3 Chapter 9 Why does milk go bad...

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TMW HOMEWORK #3 Chapter 9 Why does milk go bad despite being pasteurized? This is because pasteurization is the process to use hear to kill pathogens and reduce the number of microorganisms in beverages. Reduction in microbes does not equate complete elimination of microorganisms. This process is a modification of disinfection, because completely killing off other germs with prolonged exposure to heat will also affect the milk itself, denaturing the proteins and nutrients in the product. Why are BSL-4 suits pressurized? Why not just wear tough regular suits? BSL stands for “Biosafety level”, a level 4 would indicate working with highly dangerous and contagious pathogens. The suits, as well as, the facility is pressurized so that microbes are swept away from the workers and prevents microbes from getting out accidently. Staphylococcus aureus Is a gram positive, round shaped bacterium that appears in clusters when observed through a microscope.
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  • Spring '17
  • Scott
  • Bacteria, contagious, Methicillin

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