Infectious agents and diseases

Pathogenic-is a infectous agent that causes diseases Virulence- how terrible the disease is (How fast it transmits)

• Prion is a protein, which does is not a cell or alive • The infectious proteins effect the neurons and disturb the folding • This mis-folding can lead to neurlogical symtopms • The infectious proteins are transmitted through blood and organ transfussion • Less than 20 nm

• Transmissible spongy form encephapatheyl (TSE and CJD) creutzfeldt jakobs disease

• 2-400nm is a cell or active • Needs to be in a host (Animal or human) to work • Known as intracellular obligate parasite • Categoriesed by the genome and the capsids

1.Respiratory- cold and flu 2.Skin- HPV 3.CNS- Pollio

1.It is a prokarytoic , cell that is active 2.0.2-15 micrometres 3.Has a cell wall for prevnt leaking (peptidoglycin) there is a thick one which is gram + and the thin is gram - 4.The bacteria can be aerobic or anaerobic 5.The bacteria can also be intracellular or intracellular

1.chymadia 2.pneumonia

• 2-200micrometres, its a cell , alive and eukaryotic • Has a cell wall made by chitin • Can be replicated sexually or asexually e.g Spores • Disease such as thrush and ringworm

1.1-50 micrometres, unicellular and eukaryotic 2.Disease- malaria

• 3mm-10m, eukaryotic and multicellular • Disease types- flease,mites and bed bugs