Self And Phagocytosis Vocabulary

Question 1

Pathogen

Answer 1

A microorganism that causes diseases

Question 2

Self

Answer 2

The body’s own cells and molecules

Question 3

Foreign (non-self)

Answer 3

Not your own body’s cells and molecules

Question 4

Antigen

Answer 4

A foreign protein that triggers an immune response by lymphocytes

Question 5

Lymphocyte

Answer 5

Type of white blood cell responsible for the immune response. They become activated in the presence of antigens. There are two types: B lymphocytes and T lymphocytes

Question 6

Phagocyte

Answer 6

Type of white blood cell which carries out non-specific immune response and ingests and breaks down pathogens by phagocytosis

Question 7

Phagocytosis

Answer 7

Mechanism by which phagocytes engulf particles to form a vesicle or a vacuole

Question 8

Lysosome

Answer 8

Contain enzymes called lysozymes which they release into the phagosome which hydrolyse the bacterium

Question 9

Phagosome

Answer 9

A vesicle formed as the bacterium is engulfed by the phagocyte. The lysosome release their lysozymes into the phagosome

Question 10

Antigen- presentation

Answer 10

When an antigen-presenting cell e.g phagocyte displays foreign antigens on their own cell-surface membrane