Antigens Flashcards
1
Q
What is an antigen
A
-A molecule that stimulates an immune response
-If nonself antigen detected stimulates production of antibodies
2
Q
Antibodies
A
-proteins made up of four polypeptide chains
-soluble in blood and bodily fluids
-4 polypeptide chains
-globular protein/immunoglobulin
-Y shaped
-quaternary protein
-have at least 2 binding regions (variable regions)
3
Q
What is an anti toxin
A
Binds to a toxin making them harmless
4
Q
Is agglutination
A
To clump together antigens enabling phagocytes to locate and digest more antigens quickly
5
Q
What is an opsonin molecule
A
Antibody of the antigen antibody complex acts as an opsonin molecule enhancing phagocytosis.
6
Q
What happens once an antigen is bound
A
It forms an antigen-antibody complex
