By; Mark Turner
The role of bacteria in our world.
-Some bacteria are used to make antibiotics that kill other bacteria.
-Some Make insulin, which is a substance needed by the body to properly use sugars and carbohydrates.
-Cheese, Yogurt, Buttermilk, and Sour Cream are all made with bacteria.
-Lactic-acid Bacteria make lactic-acid to use as a preservative for some foods.
Members of the genus Trypanosoma are flagellate protozoa that cause sleeping sickness, which is common in Africa. They also cause Chagas disease, which is common in South America. The parasites are spread by insect vectors. Trypanosoma parasites enter a person’s blood when the vector bites. Then they spread to other tissues and organs. The diseases may be fatal without medical treatment.
Giardia are flagellate protozoa that cause giardiasis. The parasites enter the body through food or water that has been contaminated by feces of infected people or animals. The protozoa attach to the lining of the host’s small intestine, where they prevent the host from fully absorbing nutrients. They may also cause diarrhea, abdominal pain, and fever. A picture of a Giardia protozoan opens this concept.
Plasmodium protozoa cause malaria. The parasites are spread by a mosquito vector. Parasites enter a host’s blood through the bite of an infected mosquito. The parasites infect the host’s red blood cells, causing symptoms such as fever, joint pain, anemia, and fatigue
this protist was responsible for a major health crisis in detroit when the city's drinking water became contaminated