Use this PowerPoint to help students check their foldable for relevant information.
Bacteria are vital to maintaining the living world. Some function as producers in ecosystems. Ex. Cyanobacteria Some work as decomposers recycling all material when things die. Nitrogen Fixers convert atmospheric nitrogen into nitrates that plants can use; animals can then eat plants for their nitrogen needs.
Human Uses: b eer and food making, used to clean up oil spills, l ive naturally in human intestines to keep body in equilibrium by killing bad bacteria. Also chemically make vitamins in the intestines.
Bacteria can be pathogenic (able to cause disease). They cause disease and can upset an organism’s equilibrium. They use cells for food. They release toxins that damage cells. Many example of disease: Lyme disease, Tetanus, Tuberculosis, Diphtheria, Bacterial Meningitis, Strep Throat, Tooth Decay, Anthrax, Gonorrhea, Syphillis, Pneumonia. Bacterial growth can be controlled by heat sterilization, disinfectants, vaccines, antibiotics, proper storage, cooking and handling of food.
unction as decomposers helping to recycle nutrients and by helping the environment maintain equilibrium. Function to breakdown waste materials. Nitrogen fixers: converting atmospheric nitrogen into nitrates for use by plants. Example – Rhizobium bacteria in roots of some plants are nitrogen fixers. Other living things could not live without bacteria. All food chains terminate with decomposers such as bacteria.
Student answers will vary . Use the student answers to review concepts covered in the powerpoint on Bacteria
Good bad ecological
MICROORGANISMS The Good, the Bad,and the Ecological
BACTERIA….THE GOODMaintain equilibrium in the living world as: Producers Decomposers Nitrogen Fixers
BACTERIA….THE GOODMany Human Uses: Food production Cleaning up oil spills Human digestion •Protection from infection •Vitamin production
BACTERIA….THE BADDisrupt equilibrium by: Causing disease (pathogenic) Many resources (time and money) needed to control/eliminate them.
BACTERIA….THE BADThey use cells for food.They release toxins that damage cells.
BACTERIA….THE BADCan be controlled by heat sterilization, disinfectants, vaccines, antibiotics, proper storage, cooking and handling of food.
BACTERIA….THE ECOLOGICALDecomposersNitrogen FixersFood chainsSymbiotic relationshipsOther living things could not live without them.
Try This ! MTV – Make Learning Visual Draw picture to illustrate at least one way humans find Bacteria usefulDraw a picture to Explain the two reasonsillustrate how bacteria that Bacteria may behelp maintain ecological pathogenic. Draw aequilibrium in the picture to illustrate oneenvironment disease caused by bacteria.