Integrated Science 2 Name: Per

Pathogen Reading Assignment

Integrated Science 2 Name: Per:

Part 1. Bacteria

 Read pages 805 – 811 in your text and answer the following questions.

1. Describe the structure of bacteria classified in the Kingdom Eubacteria.

a. Give one example of an important Eubacteria:

b. Where do Eubacteria typically live?

2. Describe the structure of bacteria classified in the Kingdom Archaebacteria.

a. Give one example of an important Archaebacteria:

b. Where do Archaebacteria typically live:

3. List and describe the three ways bacteria are identified.

a.

b.

c.

4. Distinguish between autotrophic and heterotrophic bacteria.

5. Compare the three types of bacterial reproduction, binary fission, spore formation and conjugation. Include and underline the following words: sexual reproduction, asexual reproduction, genetic diversity.

6. Describe one way in which bacteria are important to the human body.

7. Describe two ways in which bacteria are important in the environment.

Part 2. Viruses

 Read pages 812 – 817 in your text and answer the following questions.

1. Define “virus” and describe the structure of a typical virus.

2. Describe the life cycle of a lytic virus including all stages.

3. Explain how a lysogenic infection is different than a lytic infection

4. Are viruses alive? List three pieces of evidence that support your answer.

Part 3. Diseases Caused by Bacteria and Viruses

 Read pages 819-824 and answer the following questions.

1. Define “Pathogen”:

2. Describe the two ways that bacteria produce disease and give a specific example of each:

a.

b.

2. Explain how a vaccine can be used to prevent an infection.

3. After an infection has occurred, you may take antibiotics to combat it. How do antibiotics work?

4. Describe the three methods used to control bacterial growth:

a.

b.

c.

5. Explain why/how the only cure for viral infections is prevention:

6. What is a viroid and how does it affect plants?

7. What are prions and how do they cause disease?

8. Some people think that it will be possible to wipe out all diseases someday. Do you think that is possible? Explain your answer.

9. What type of medication is available to combat bacterial infections?

Part 4. Agents of Disease

 Read pages 1025 - 1029 in the Integrated Science Book and answer the following questions.

1. Define disease.

2. List 5 types of pathogens that cause disease.

3. Why does the human body provide just the right conditions for disease growth?

4. What are three common viral infections?

5. List three common bacterial diseases.

6. List three common diseases caused by protists. Which of these may be considered the most series health problem affecting the human species?

7. In what parts of the world are worms most commonly found? Give two examples.

8. Where do the most common fungal infections occur and what is one common example?

9. List three ways that diseases are spread.

Part5. Identifying Agents of Disease

 Using your textbook and other resources, complete the following chart. The first line is completed for you.

1

Pathogen Reading