immune response

Question 1

what type of white blood cells carry out the non specific immune response

Answer 1

phagocytes

Question 2

what type of white blood cells carry out the specific immune response

Answer 2

lymphocytes

Question 3

what are the 2 types of lymphocytes

Answer 3

t cells

b cells

Question 4

where are lymphocytes produced

Answer 4

in the bone marrow

Question 5

where do t - cells mature

Answer 5

in the thymus gland

Question 6

what type of immune response are t cells involved in

Answer 6

cell mediated immunity

Question 7

what type of cells do t- cells carry out cell mediated immunity on

Answer 7

body cells that have been infected by non self material
(e.g: viruses)

cells from individuals of other species

abnormal cells of our body
(e.g: cancer cells)

different antigens to normal

Question 8

where do B- cells mature

Answer 8

in the bone marrow

Question 9

what type of immune response are B cells involved in

Answer 9

humoural immunity

(involves antibodies that are released into the blood plasma)

Question 10

define humoural immunity

Answer 10

involves antibodies that are released into the blood plasma

Question 11

list 2 types of antigen presenting cell

Answer 11

phagocytes present antigens after phagocytosis

body cell infected by virus will display part of the virus on it’s surface (viral antigen)

Question 12

what does Th cells receptors having to be complementary mean in terms of what they can bind to

Answer 12

Th cells with receptors that are complementary to a specific antigen

therefore the Th cell will only bind to an antigen presented on the cell surface membrane of an antigen presenting cell

Question 13

what causes the activation of a Th cell

Answer 13

the binding of an antigen and receptor activates a Th cell

Question 14

what 3 things can the activation of a Th cell cause

Answer 14

• a memory cell to be formed
• stimulates B cells to divide and produce antibodies
• stimulate phagocytes resulting in increased phagocytosis

Question 15

what is the function of memory cells

Answer 15

circulate in the blood and tissue fluid to prevent
reinfection with the same pathogen

Question 16

what is the function of Tc cells

Answer 16

kill infected body cells by making holes in the cell membranes

Question 17

explain how antibodies binding to antigens causes cells to become antigen presenting cells

Answer 17

antigen enters B cell
B cells becomes an antigen presenting cells
B cell displays bacteria antigen on its cell membrane

Question 18

explain how Th cells aid the formation of memory cells and plasma cells

Answer 18

specific Th cells detects antigens and stimulate the B cell

B cell divides by mitosis to form a clone of identical B cells called PLASMA CELLS that secrete specific antibodies that can bind to antigen on pathogen these are MONOCLONAL ANTIBODIES

some of these B cells then develop into memory cells