lymphocytes, antigens and antibodies

Question 1

what are the 2 types of lymphocytes

Answer 1

T cells and B cells

Question 2

where do B cells mature and what are they involved in

Answer 2

mature in bone marrow
responsible for humoral(body fluids) immune response, produce antibodies
key role in defense against pathogens

Question 3

where do T cells mature and what are they involved in

Answer 3

mature in thymus
responsible for cellular immune responses
key role in defence against intracellular pathogens

Question 4

describe what an antigen is and what an antibody is

Answer 4

antibody = proteins produced in response to and that bind to antigens, each antibody has unique variable region that binds to  specific antigen
antigen = any substance that can cause adaptive immune response, by activating B and T cells

Question 5

describe the relationship between B, antibodies and antigens

Answer 5

B cells use membrane-bound antibodies to recognise and bind to antigens

Question 6

how do B and T cells make the adaptive immune response is specific

Answer 6

individual B and T cells express only one type of antigen receptor on surface, so can only target one specific pathogen

Question 7

where do antigen-specific B and T cells develop

Answer 7

primary lymphoid tissues, bone marrow and spleen