Download Harmful and Helpful Bacteria Lab

Helpful and Harmful Bacteria Lab
Purpose: To observe examples of various types of bacteria and to learn more
information about their relationships with other organisms.
Part 1: Harmful Bacteria – Use microviewers and slide set #20.
1. Who is responsible for introducing the science of bacteriology?
2. View Slide 1 – Diphtheria
a. Describe the shape
b. How do the bacteria cause disease?
c. How is diphtheria prevented?
3. View Slide 2 – Typhoid Fever
a. Describe the structure of this bacterium
b. How is this disease transmitted?
c. How can typhoid fever be prevented?
4. View Slide 3 – Pneumonia
a. Why are pneumonia bacteria particularly harmful?
5. View Slide 4 – Tuberculosis
a. Describe the structure of the bacterium
6. View Slide 5 – Blood Poisoning Bacteria
a. Describe the shape and structure of this bacterium
b. What does the term “streptococci” mean?
c. How is the infection being controlled?
7. View Slide 6 – Food Poisoning Bacteria
a. What is this type of food poisoning called
b. How do these bacteria cause a problem?
8. View Slide 7 and Slide 8 and then look carefully at the diagrams that you have
been provided with. Notice how the bacteria are similar and different.
Part 2: Helpful Bacteria – Use microviewers and slide set #19
1. What is a culture?
2. View Slide 1 – Bacteria of Decay
a. Why are these bacteria so important to life on earth?
3. View Slide 2 – Bacteria of Fermentation
a. What is fermentation?
b. Where is this process useful?
4. View Slide 3 – Nitrogen – Fixing Bacteria
a. What doe these bacteria do for plants?
5. View Slide 4 – Nitrogen – Fixing Bacteria (nodule)
a. What is a nodule and where is it found?
b. What do the bacteria in the nodule do for the plant?
6. View Slide 5 – Nitrogen – Fixing Bacteria (roots)
a. What is a legume? Give several examples of legumes
b. How is this relationship a partnership between the bacteria and the plant?
7. View Slide 7 – Cheese Bacteria and Slide 8 – Sour Milk Bacteria
a. How is cheese made? How is yogurt made?