Antigens and Phagocytosis

Question 1

What are Antigens?

Answer 1

Chemical markers, a protein found on the outside of cells that triggers an immune response

Question 2

What are self and non self antigens?

Answer 2

Self antigens are antigens that your body recognises
Non self antigens are antigens that your body doesn’t recognise as its foreign

Question 3

Where are phagocytes made?

Answer 3

In the bone marrow

Question 4

What are Neutrophils?

Answer 4

They engluf and digest pathogens

Question 5

What are Macrophages?

Answer 5

They can punch holes in the bacteria or stick proteins to the outside of the bacteria to make the more appealing for the Neutrophils to destroy

Question 6

What is Phagocytosis?

Answer 6

Cellular process of engulfing solid particles using the cell membrane

Question 7

What is the first step o Phagocytosis?

Answer 7

Pathogen is recognised by having a non self antigens. Pathogen attaches to the phagocytes by surface receptors

Question 8

What is the second step of Phagocytosis?

Answer 8

The pathogen is engulfed by the phagocytes by endocytosis forming a phagosome

Question 9

What is the third step of Phagocytosis?

Answer 9

Lysosomes fuse to phagosome to form a phagolysosome and release H2O2, HCL and digestive enzymes into phagosome to digest pathogen

Question 10

What is the fourth step of Phagocytosis?

Answer 10

Harmless products removed by exocytosis