10. diseases and immunity Flashcards
1
Q
pathogen
A
a microorganism that causes disease
2
Q
host
A
an organism in which a pathogen lives and reproduces
3
Q
transmissible disease
A
a disease that can be passed from one host to another that is cause by pathogens
4
Q
antigen
A
a chemical that is recognised by the body as being foreign and stimulates the production of antibodies
5
Q
immune response
A
the reaction of the body to the presence of an antigen
6
Q
memory cells
A
long lived cells produced by the division of lymphocytes that have contacted their antigen
7
Q
active immunity
A
long term defence against a pathogen by anitbody production in the body
8
Q
passive immunity
A
short term defense against a pathogen by antibodies acquired from another individual
