Microbiology
Module 03 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 and give examples of SPECIFIC organisms that are representatives of each category of Morphology AND Arrangements. 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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