1. Mr. Faia 2/10/15 6 th Grade Science

2.  Bacteria help the environment in 3 main ways: Nitrogen Fixation Recycling Bioremediation

3.  How much of the air is made up of nitrogen?  Plants cannot use the nitrogen in the air

4.  Nitrogen-fixing bacteria change the nitrogen  The changed nitrogen can now be used by plants

5.  Decomposer bacteria break down dead matter  This releases nutrients back into the ground

6.  Bacteria can change harmful chemicals into harmless chemicals  Used to clean up waste from industries, farms, and cities.

7.  In your food  In your medicine  Genetic Engineering

8.  Bacteria is found in cheese, yogurt, and other dairy products  The bacteria produce lactic acid

9.  These bacteria break down lactose, which is a sugar found in milk  Why are these bacteria important?

10.  Bacteria are used to produce antibiotics  This medicine is used to kill other bacteria and microorganisms

11.  Insulin is used to break down and use sugar and carbohydrates  Scientists used genetic engineering to create bacteria that produce insulin

12.  Bacteria that cause diseases are called pathogenic bacteria  2 ways to treat pathogenic bacteria:

13.  Bacteria can also cause disease in: Plants Animals Fungi Protists Other bacteria

14.  On your own or with a partner: Answer questions 1-6 on p.33