B3: communicable diseases 1-4 Flashcards
learn which pathogens casue which disease, along with some symptoms
1
Q
what are the four types of pathogens?
A
virus
bacteria
fungi
protist
2
Q
what is a virus and what do they do?
A
they are not cells and not living
theyre 10000x smaller than animal cells
they reproduce inside cells, damaging and bursting it
3
Q
name three viral infections
A
measles
HIV
TMV
3
Q
what are the symptoms of measles? how is it spread?
A
red rashes and fever
spread through coughs and sneezes
4
Q
what is HIV and how is it spread and how can it be treated
A
HIV is spread by sexual contact or exchange of bodily fluid.
it causes immune deficiency.
there are recurrig flu like symptoms
use antiretroviral drugs to cure
5
Q
describe TMV (spreading, symptoms, cure)
A
spreads by contact
causes mosaic like discoloured patches on leaves, reducing photosynthesis
affected leaves must be destroyed
6
Q
A
