5.2 Phagocytosis

Question 1

What are the 2 types of white blood cells?

Answer 1

1. phagocytes
2. lymphocytes

Question 2

What is phagocytosis?

Answer 2

Mechanism that cells called phagocytes engulf large particles in their vesicles formed from cell membrane.

Question 3

What are the stages of phagocytosis?

Answer 3

1. opsonin binds to the antigen of the pathogen
2. neutrophil binds to the attached opsonin and engulf the pathogen
3. phagosome forms around the engulfed pathogen
4. lysosomes fuse with the phagosome and release lysozymes into it
5. the lysozymes break down the pathogen and destroy it

Question 4

What is opsonin?

Answer 4

An antibody that is not specific which binds to different pathogens.

Question 5

What is neutrophil?

Answer 5

A type of phagocyte

Question 6

What is phagosome?

Answer 6

A vesicle

Question 7

What are lysozymes?

Answer 7

Hydrolytic enzymes