Hwo can these organisms casue disease?Watch
I think parasites can cause disease because they can cause secondary infection- but dont know how they can cause primary?
Bacteria- I think they can damage a cell (how?) and release harmful toxins
Fungi- the reproductive hyphae grows to the surface of the skin which release spores (kinda unsure here)
Viruses- they invade and takeover genetic material and organelles, and thus affected cellular processes. And they cause the cell to manufacture more copies of the virus, so the host cells eventually burst releasing toxins.
Is this even right, can anyone add more? Ive tried look on the internet but its just rubbish
Pathogens- Erm, Bacteria, Fungi and Viruses are all pathogens. Bacteria is an Prokaryotic pathogen, Fungi is an Eukaryotic pathogen and Viruses are pathogens that cannot reproduce by it's self and needed to either hijack the cell's organelles to produce more viruses itself or hijack the genetic materials of the cell to program virus replication.
Bacteria- Remember that not all bacterium is an pathogen! Some bacteria causes diseases and illness by reproducing inside your cells. As the grow and multiply rapid (via Meiosis), they damage or completely destroy your cells and more bacteria infect other nearby cells to reproduce and the cycle continues unless your TB cells find and destroy these bacteria via endocytosis and using lysosome vesicle containing antibodies to kill of the bacteria cell. Some bacteria species produces toxins harms the cells in your body.
Fungi- Sorry, I am not knowledgeable about the pathogenic properties of fungus species.
Viruses- Virus cannot reproduce outside the body of your cells because they don't have the same genetic materials that single cellular organisms (bacteria etc) and multicellular organisms (plants and animals) have. It is even debatable on whether or not viruses are living organisms! So viruses invade into your cells and hijack your genetic materials to self-replicate itself and produce multiple copies of itself. It causes damage to you because imagine millions of viruses infecting your ___ organ cells and millions your ___ organ cells bursts, this would effect the functioning of your organ because of the changes made to it's structure (thanks to due the viruses).
I hope this helps!