Human Defences Flashcards
1
Q
What is an antigen?
A
A protein on a cell that allows it to be recognised.
2
Q
What is an antibody?
A
It is produced by white blood cells and detects foreign cells.
3
Q
What is the immune system made up of?
A
White blood cells.
4
Q
How do white blood cells fight pathogens?
A
They release antibodies and antitoxins.
5
Q
How do antibodies help to destroy pathogens?
A
They recognise foreign cells and mark them for destruction.
6
Q
How do antitoxins help to fight against pathogens?
A
They neutralise the effects of the pathogens toxins.
7
Q
What do pahgocytes do?
A
They engulf and destroy pathogens.
8
Q
What is a memory cell?
A
A cell that recognises the antibodies you have made before to fight off pathogens so you can fight them off again.
