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MCB2289 Introduction to Microbiology
Module 3 Homework Assignment
•Use the information presented in the module folder along with your readings from the textbook to answer the following questions.
1.Define the following terms: sterilization, disinfection, and sanitization.  How are each of these terms different from one another?
2.Compare and contrast selective media and differential media.  Give examples of each type of media:
3.Define the following terms used to describe bacterial morphology or bacterial arrangements andgive examples of SPECIFIC organisms that are representatives of each category of MorphologyANDArrangements. For example: an example of a cocci organism is Staphylococcus aureus
a)            Morphology:
1.            Cocci –
2.            Bacilli –
3.            Vibrios
4.            Spirilla
5.            Spirochete–
b)            Arrangements:
1.            Diplo –
2.            Strepto-
3.            Staphlo-
4.Describe the four (4) different stages of the bacterial population growth curve:
5.            Describe briefly how the following factors influence microbial growth:
a)            Temperature
b)            pH
c)            Osmotic Pressure
d)            Atmospheric conditions (presence or absence of oxygen)

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