Download Helpful Bacteria - Use microviewers and slide set #19

Helpful Bacteria and Harmful Bacteria
Purpose: To observe examples of various types of bacteria and to learn more information
about their relationships with other organisms.
Method: – Use microviewers and slide set 105 to answer the following questions.
Results
Part 1: Harmful Bacteria
1. Who is responsible for introducing the science of bacteriology?
2. a. What magnification has been used to look at most of the slides? Is this a
light or electron microscope?
b. What are the three common shapes of bacteria?
3. Slide 1 Diptheria
a. Describe their shape?
b. Describe the disease caused by this bacteria? Is it fatal?
c. How is diphtheria prevented?
4. Slide 2 Typhoid Fever
a. Describe the structure of this bacterium.
b. How is this disease transmitted?
c. Describe two ways this disease can be prevented.
6. Slide 5 Bacteria of Blood Poisoning
a. Describe the shape and structure of this bacterium.
b. What does the term “streptococci” mean?
c. How is the infection being controlled?
5. Slide 6 Bacteria of Food Poisoning
a. What is this type of food poisoning called?
b. Describe how these bacteria cause a problem.
Helpful Bacteria
7. What is a culture?
8. Slide 7 Cheese Bacteria
a. Describe how bacteria change milk into cheese.
9. Slide 8 Vinegar Bacteria
a. Describe how bacteria make vinegar. What is the common name for
vinegar?
b. What two products are made by soaking cucumbers and cabbage in
vinegar?
10. Diagram: Divide a sheet of blank paper into 4 equal blocks and make sketches of
the bacteria in slides 1(three shapes), 2,5 ,6. Title each diagram and include the
magnification of each.