Lecture Quiz 5

Question 1

Which of the following is FALSE?
- The innate immune system recognizes and reacts to structures shared by classes of microbes

• The innate immune system responds in the same way with repeated encounters with pathogens
• The innate immune system’s defenses develop over your lifespan
• The innate immune system has a limited diversity of receptors

Answer 1

The innate immune system’s defenses develop over your lifespan

Question 2

• recognize peptides displayed on an MHC I
• have antibody receptors

Answer 2

B lymphocytes

Question 3

• acquire their peptide cargo within the endoplasmic reticulum (ER)
• are found on the surface of nucleated cells
• display a peptide for recognition by a cytotoxic T lymphocyte (TCTL)

Answer 3

Major Histocompatability Complex Type I (MHC I) proteins

Question 4

The stages of phagocyte mobilization?

Answer 4

1. leukocytosis
2. margination
3. diapedesis
4. chemotaxis

Question 5

• are lymphocytes
• destroy microbes via phagocytosis

Answer 5

Natural Killer cells

Question 6

• dendritic cells
• CD4+ co-receptors
• T-cell receptor recognition

Answer 6

Cell mediated immunity

Question 7

Cytokines include

Answer 7

interleukins

Question 8

All leukocytes are lymphocytes.

True or False?

Answer 8

False

Question 9

• results in the formation of membrane attack complex
• can facilitate phagocytosis
• can result in release of histamine

Answer 9

Complement activation

Question 10

T lymphocytes recognize peptide antigens when displayed on

Answer 10

an MHC I or on an MHC II

Question 11

T lymphocytes undergo positive and negative selection

Answer 11

in the thymus