Hello Everyone. I'm here to talk about the difference between prions, viruses, bacteria, protozoans, fungi and macro-parasites. These are all pathogens that cause diseases. I will also be giving examples of the diseases that these pathogens cause. Prions are infectious agents which do not have a nucleic acid genome. Prion diseases are often called spongiform encephalopathies (mad cows disease) because of the post mortem appearance of the brain with large vacuoles in the cortex and …showed first 75 words of 643 total…

…showed last 75 words of 643 total…they cause are: Ring worm Tinea & Thrush The 1st picture is of fungi growing on things. The 2nd pictures are of fungi under the microscope. Marco-parasites are organisms that can be seen by the naked eye. Organisms are any form of animal of plant life. Examples of diseases they cause are: Fleas Liver fluke & Many plant parasites eg. aphids The 1st picture is of a flea, while the 2nd is of liver fluke.