Specific Immune Response

Question 1

What are memory cells , B cells and cytotoxic T cells

Answer 1

Memory cells - enable rapid response to future infections by the same pathogen
B cells are stimulated to divide and secrete antibodies
Activate T killer cells - kill abnormal cells and cells that are affected by pathogens by producing a protein called perforin which makes holes in the cell membrane. The cell becomes too permeable and dies as a result

Question 2

What’s clonal selection

Answer 2

Where the t helper cell receptors fit exactly on antigen on the APC

Question 3

What’s clonal expansion

Answer 3

T cells divide rapidly by mitosis and form clone of genetically identical cells

Question 4

What’s the cell mediates response

Answer 4

1. Pathogen is engulfed into a phagosome
2. It fuses with lysosome and pathogen is hydrolysed
   3.the antigens are displayed on the cell membrane
3. Specific Helper T cells stimulates a specific b cell
4. B cell then divides by mitosis

Question 5

what’s the cell mediated response -t helper cells

Answer 5

the pathogen invades the body
phagocyte becomes an apc
receptors fit onto the antigens (clonal selection)
activates the t cell to divide by mitosis and cell releases chemicals which stimulates other cells
cloned t cells develop into memory these cells stimulate phagocytes and b cells and activate t killer cells
and they activate t cells