Definitions

Question 1

Pathogen

Answer 1

Any organisms that cause diseases

Question 2

Antigens

Answer 2

Any part of an organism that is considered as ‘non-self’ by the immune system and stimulates an immune response

Question 3

Antibodies

Answer 3

Large Y heaped protein with a specific binding sites and these specific binding sites are complementary to 1 antigen and the a produced by white blood cells - b lymphocytes