Chapter 31-Immune Disease

Question 1

What is Germ Theory? Who created the theory?

Answer 1

Specific microorganisms that cause disease that are called pathogens

-Louis Pasteur

Question 2

What are Koch’s 4 postulates?

Answer 2

1. Pathogen must be present in every case where the disease is found
2. Pathogen must be grown in a pure culture
3. Pure culture pathogen must be inserted into a healthy animal and the animal must develop the disease.
4. The pathogen from the newly sick animal must be grown in a pure culture and must be identical to the original pathogen.

Question 3

What is a 1. bacteria? 2Virus? 3Fungi? 4Protozoa? 5Parasite? 6Vector

Answer 3

1. Single celled organism that releases toxins to cause disease
2. Disease causing strand of DNA or RNA
3. Cause disease by living of hosts cells and nutrients
4. Live on hosts cells and nutrients
5. Grow and feed on hosts nutrients
6. Anything that carries a pathogen and transmits it to another organism

Question 4

What is a phagocyte?

Answer 4

A cell that destroys pathogens by engulfing them

Question 5

What are the types of W.B.C?

Answer 5

Basophils, mast cells, neutrophils, macrophages, lymphocytes, and eosinophils

Question 6

What does a 1basophil do? 2mast cells? 3neutrophil? 4macrophages? 5Lymphocyte? 6Eosinophil?

Answer 6

1. Makes and release histamine in blood stream
2. Makes and releases histamine in body tissues
3. Phagocyte
4. Phagocyte
5. Destroys infected body cells or produces proteins to inactivate pathogens
6. Injects poisons into parasites

Question 7

What do T cells do? B cells?

Answer 7

T cell-destroys infected body cells

B cell-produce antibodies to inactivate pathogens that havent infected a cell yet