Mind map
Communicable Diseases
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Communicable Diseases
Types of pathogens
- Bacteria are prokaryotes so do not have membrane bound nucleas or organelles. They can be classified by there shapes or by there cel walls. They have two different types of cell walls:gram-positive and gram-negative. This is useful to us because there type of cell wall affects how bacteria react to antibodies. The cell wall type is found out by Gram staining
- Viruses are non-living infectious agents. There structure is genetic material surrrounded by protein. Virususes work by invading a living cell and taking over the biochemistry of the host cell to make more viruses. they reproduce rapidly and develope adaptations to the host making them successful pathogens viruses that attack bacteria are known as bacteriopahges. Thye can used in order to identify and treat diseases
- Protocista are a group of euklaryotes with a wide range of feeding methods. small percentage of protocista acts as pathogens causing devestating communicable disease in both plants and animals and use people or animals as host orgnaisms. Pathogenic protocists need vectors to transport them eg malaria and sleeping sickness or enter the body through polluted water
- Fungi are eukaryote organisms that are often multicellular. Fungi cannot photosynthesise. Many fungi are sacrophages so they fee of dead and decaying matter but some are parasitic and feed on living plants and animals and cause communicable diseaese. they can killl a plant by preventing photosynthiesis at the leaf. They can spread quickly through plant colonies.