1 / 8

Bacteria’s Role in the World

Bacteria’s Role in the World. Pgs. 29 - 32. Good for the Environment. Some bacteria can cause disease, but many are helpful to us. Nitrogen-fixing bacteria consume nitrogen in the air and change it into a form that plants can use.

shanna
Download Presentation

Bacteria’s Role in the World

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Bacteria’s Role in the World Pgs. 29 - 32

  2. Good for the Environment • Some bacteria can cause disease, but many are helpful to us. • Nitrogen-fixing bacteria consume nitrogen in the air and change it into a form that plants can use. • Decomposing bacteria make nutrients available again to living things that can use them.

  3. Clean up Bacteria • Some bacteria have been used to combat pollution. • Bioremediation is the use of bacteria and other microorganisms to change pollutants into harmless chemicals. • This is used in industrial, agricultural and municipal wastes as well as oil spills.

  4. Bacteria Good for People • People have been able to genetically engineer bacteria since 1973. • Researchers inserted genes from a frog into Escherichia coli and the bacteria reproduced frog genes. • Scientists can engineer bacteria for medicines, insecticides, cleansers, adhesives, foods and many other products.

  5. Uses for Bacteria • Some bacteria are used to make antibiotics that kill 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 foods.

  6. Harmful Bacteria • Pathogenic bacteria cause diseases by invading a host organism and obtain nutrients from the host’s cells. • These bacteria can be cured with antibiotics. • Some types of diseases from bacteria are: cavities, ulcers, strep throat, food poisoning, bacterial pneumonia, Lyme disease, Tuberculosis Leprosy, Typhoid fever, bubonic plague

  7. Diseases for more than people • Pathogenic bacteria attack plants, animals, protists, fungi and other bacteria. • They can cause damage to fruit, grain, and vegetable crops.

More Related