Microbiology Lecture Review
Microbial Nutrition and Growth
Dr. Weis

1. Define nutrient and give the five (5) major macromolecule groups and uses

2. Define chemoheterotroph and give examples of organisms within this category

3. Give the use of Oxygen for microbes, name and describe the five (5) classifications based on oxygen requirements along with the toxic forms of oxygen and enzyme systems used to detoxify reactants.

4. Name organisms based on their temperature requirements and explain how temperature affects microbial growth.

5. Define pH and give the mathematical formula and the biological range. Name organism classifications based on pH and explain how pH affects microbial growth.

6. Properly and completely define osmosis. Explain the effects of osmotic pressure and tonicity. Know how salt affects water and the name of microbes that prefer a high salt environment

7. Define biofilm and give specific examples

8. Define enzyme by its three major parts, its function and give specific examples.

9. Know culturing techniques (from lab) and types of media used

            a) General use

            b) Selective

            c) Differential

10. Know the parts of the growth curve and explain each phase.