4 Chemical Control of Microbial Growth Assignment
Emilie Miller, Ph.D
Name: _______________
- Disinfectant experiment: Sketch the appearance of your own Nutrient Agar plate. Record your observations below.
Chemical or Method Relative Growth Relative Diversity Control 1. 2. 3. 4. 5.
2. For the second table, do some research about each of your chemicals or methods. Answers should address specific effects to the cell membrane, cell wall, and any internal structures. If there are any antifungal, antiviral, or antiprotozoal effects, they can be noted in the right-hand column.
| Chemical or Method | Antibacterial Effects | Other Antimicrobial Effects |
| 1. | ||
| 2. | ||
| 3. | ||
| 4. | ||
| 5. |
3. Based on your results, which chemical or methods worked best?
4. Which chemical or methods were least effective?
Observe the contact plates from your classmates. Note relative growth and diversity of the contact plates with respect to the locations the microbes were gathered.
5. Which locations had the most growth and diversity? Note 3 different examples.
6. Why would these locations have the most growth and diversity?
7. Which locations had the least growth and diversity? Note 3 different examples.
8. Why would these locations have the least growth and diversity?
