LO 3

Question 1

Define: Immunization

Answer 1

Process by which resistance to an infectious disease is induced or augmented

Question 2

Define: Immunity

Answer 2

The specific resistance of a host to an infectious disease

- ex. once you get chicken pox you will not get that disease again

Question 3

Define: Antigen/ Immunogens

Answer 3

Substance, usually protein, that induces a specific immune response
- Can be bacteria or viruses

Question 4

Define: Antibodies / Immunoglobulins (Ig)

Answer 4

Protein molecules produced by the host in response to stimulation by an antigen… resulting in immunity

Question 5

What are the two types of antibodies/ Immunoglobulins?

Answer 5

Immunoglobulin M (IgM)
Immunoglobulin G (IgG)

Question 6

Define: Immunoglobulin M (IgM)

Answer 6

• First antibody produced
• Largest antibody molecule
• Pentomer (contains 5 IgG’s)
• does NOT last long in the host
• Presence indicates current or recent exposure to antigen

Question 7

Define: Immunoglobulin G (IgG)

Answer 7

• Follows production of IgM
• Long lasting antibody
• Presence indicates past exposure to antigent

Question 8

Where can we find IgM and IgG?

Answer 8

Present in the blood and other body fluids

*Humoral fluid = blood stream