Third Line of Defence

Question 1

What are B-lymphocytes?

Answer 1

B lymphocytes create a type of protein called an antibody. These antibodies bind to pathogens to neutralize them.

Question 2

What are T-lymphocytes? Name the 3 cells as well

Answer 2

They are a type of white blood cell. They help fight infections in the immune system. There are Helper T cells, Killer T cells and Memory Cells.

Question 3

What are Helper T cells?

Answer 3

Helper T-cells are a type of immune cell. When they sense an infection, they activate other immune cells to fight it

Question 4

What are Killer T cells?

Answer 4

Killer T cells possess special molecular weapons that enable them to directly attack and destroy recognisable targets

Question 5

What are Memory T cells?

Answer 5

Memory T cells are antigen-specific T cells that remain long-term after an infection has been eliminated.

Question 6

What are memory cells?

Answer 6

A long-lived immune cell that can recognize a foreign particle that it previously fought and create a stronger immune response.

Question 7

What is a vaccine?

Answer 7

A vaccine is a biological preparation that provides active immunity to a particular infectious disease

Question 8

what is herd immunity?

Answer 8

resistance to the spread of an infectious disease within a population of a high proportion of individuals as a result of previous infection or vaccination.