How do viruses, bacteria, and protists effect our lives in both positive and negative ways? By kailey nelson Slide 2 How Bacteria Effects Our Lives Positive: Positive: Archaebacteria produce Methane (a major component in about 20% of earths deposits of natural gas) Heterotrophic eubacteria are decomposers and break down large chemicals in dead organisms into small chemicals Some bacteria help make medicines Some help digest food Some make vitamins your body needs Negative: Negative: Some bacteria cause food to spoil when they break down the chemicals Some cause diseases/illnesses, which can be mild (like strep throat) or life threatening (like Tuberculosis ) Slide 3 How Viruses Effect Our Lives Positive: Positive: Scientists take advantage of the fact that viruses are cells so they use them as messengers by and good at getting inside taking out the bad genetic material of a virus and put in information that the virus will later deliver to cells that don't work properly. The information the virus gives the cell helps it do its job right. Negative: Negative: Viruses can cause harm to any living thing, not one of the six kingdoms is completely safe from them Many viruses cause life threatening diseases Slide 4 How Protists Effect Our Lives Positive Positive Some clean intestines out. Some protists break cellulose down into carbohydrates. protists form a broad base across the bottom of the food chain supply approximately one- half of the worlds oxygen (unicellular algae compose a large portion of the worlds phytoplankton). Protists, along with bacteria and fungi, are responsible for decomposing and recycling nutrients.. Negative Negative Many are parasitic. Some examples are: Plasmodium, a protist that cause malaria, Trypanosoma, a protist that cause African sleeping sickness, and dinoflagellate that cause the red tide.