Which of the following T cells remain dormant after the initial exposure to an antigen?
a) cytotoxic T cells
b) helper T cells
c) memory T cells
d) suppressor T cells
Which of the following proteins damage broad group of pathogens without harming the body cells?
a) interleukin-I
b) interleukin-2
c) defensins
d) perforins
Plasma cells are……
a) B cells that actively secreting antibodies
b) the same as memory cells
c) inactive T cells carried in the plasma
d) formed from plasma
Antibodies combine with antigens……
a) at constant region
b) at variable region
c) when macrophages are present
d) all of these
In addition to the immune system we are protected from disease by……
a) antigens
b) body temperature
c) hormones
d) mucous membrane & cilia
Fever…….
a) decreases interferon production
b) decrease the activity of pathogens
c) decrease the concentration of iron in the blood
d) decrease the reproduction of invading bacteria
