Animal Defence 2

Question 1

General explanation of specific immunity

Answer 1

T cell receptors and antibodies bind to non-self antigens

Question 2

Self markers

Answer 2

Allow the immune system to identify self and non-self Ags

Question 3

Humoural immunity response

Answer 3

Cell surface antigen undergoes phagocytosis, phagocyte binds to T helper cels, which stimulates B cell to produce antibodies

Question 4

Cellular immunity response

Answer 4

Surface antigen undergoes phagocytosis, phagocyte binds to T helper cell, stimulates Tc cell which induces apoptosis in original affected cell

Question 5

Primary immune response

Answer 5

Ag first countered, naive lymphocytes proliferate

Question 6

Secondary immune response

Answer 6

Ag encountered again, memory cells proliferate

Question 7

Antibody anatomy

Answer 7

Heavy chain and light chain, each with constant and variable regions, Ag binding site