exam Q's

Question 1

describe how cytokine molecules can stimulate specific groups of B lymphocytes to divide?

Answer 1

-cytokine has specific shape
-binds to the receptor
-receptor on cell surface membrane of b lymphocyte
-receptor has complimentary shape
-activates clonal expansion

Question 2

describe the role of memory cells when the influenza virus enters the body

Answer 2

-recognise virus/antigen
-clonal expansion
-can change to form plasma cells
-make antibodies
-responsible for secondary response