Biology Chapter 10-2,3

Biology Chapter 10-2,3 - 1 Chapter 10 Section 2 Bacterias...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Section 2 - Bacteria’s Role in the World Have you ever had strep throat or a cavity in your tooth?  Did you know that both  are caused by bacteria? Bacteria live in our water, our food, and our bodies.  Much of what we know  about bacteria was learned by scientists fighting bacterial diseases. But of the thousands of types of bacteria, only a few hundred cause disease. Many bacteria do things that are important and even help us. Bacteria play an important role in the nitrogen cycle. Plants need nitrogen to grow. Nitrogen gas makes up about 78% of the air. Plants cannot use the nitrogen in the air. They need it from the soil. Bacteria takes nitrogen from the air and puts it in the soil. This is called nitrogen fixation . People raise bacteria for food. cheese yogurt buttermilk sour cream People use bacteria to kill bacteria. Antibiotics
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/15/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.

Page1 / 3

Biology Chapter 10-2,3 - 1 Chapter 10 Section 2 Bacterias...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online