Mechanism of Immune Response

Question 1

STEP 1: Name of the mechanism

Answer 1

Humoral immunity/ Antibody immune response/ humoral immune response

Question 2

STEP 2: What the bacteria do?

Answer 2

Bacteria that invade the body is engulfed and digested by macrophage/ antigen presenting cell (APC)

Question 3

STEP 3: What is the function of APC?

Answer 3

1. APC displays antigen-class II MHC complex on its surface
2. (That activates) helper T cells to bind with APC/ antigen-class II MHC complex.
3. APC secretes interleukin-1/cytokines to activate helper T cells.

Question 4

STEP 4: What activated helper T cells do?

Answer 4

Activated helper T cells secrete interleukin-2

Question 5

STEP 5: What Interleukin-2 do?

Answer 5

Interleukin-2 activates B cells

Question 6

STEP 6: What B cells do?

Answer 6

Activated B cells then proliferate and differentiate into plasma cells and memory B cells.

Question 7

STEP 7: What is function of Plasma cells?

Answer 7

Plasma cells secrete antibody to destroy the bacteria.

Question 8

STEP 8: What is function of memory B cells?

Answer 8

Memory B cells are used for rapid response towards secondary infection.