Non specific animal responses - phagocytosis

Question 1

step 1 in phagacytosis

Answer 1

• phagacyte recognises pathogen as foreign and binds to surface of pathogen.

Question 2

step 2

Answer 2

• phagacyte engulfs pathogen
• phagasome forms (vesicle around pathogen).
• phagosome + lysosome = phagolysosome

Question 3

step 3

Answer 3

• In phagolysosome, hydrolytic enzymes break the pathogen.

Question 4

step 4 - only macrophages

Answer 4

antigens and glycoproteins combine to create a major histocompatibility complex.

Question 5

step 5- only macrophages

Answer 5

MHC moves to the surface of the cell and causes the cell to become an antigen presenting cell.

Question 6

what can we stain and why?

Answer 6

the nuclei of lymphocytes. this indicates if a specific or not specific immune response is taking place.