B2-keeping healthy-microrganisms and disease

B2-keeping healthy-microorganisms and disease

(1)

Symptoms can be caused by cell damage or by toxins

some microorganisms damage cells directly. for example malaria 

Malaria causes flu like symptoms

many infectious microorganisms produce poisons(toxins) that damage cells

e.g staphylococcus can cause food poisoning

Microorganisms produce toxins that damage cells,for e.g fevers or inflammation.some strains of Escherichia coli causes diarrhoea by secreting toxic substances

(2)

microorganisms reproduce quickly insider the…