Biology Chapter 10-1

Biology Chapter 10-1 - Bacteria reproduce by a process...

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Chapter 10 Section 1- Bacteria How many bacteria are in a handful of soil?   Would you believe that a single gram of soil - which is about the size of a pencil  eraser - may have more than 2.5 billion bacteria? A handful of soil may contain trillions of bacteria! There are more types of bacteria on Earth than all other living things combined. Bacteria make up the kingdoms Eubacteria and Archaebacteria. Bacteria are usually one of 3 main shapes: bacilli, cocci, or spirilla. Bacilli are rod-shaped. They are the most common bacteria. Cocci are spherical. Spirilla are long and spiral shaped. Some bacteria have hairlike parts called flagella that help them move around. All bacteria are single-celled organisms. They do not have a nucleus. They are called prokaryotes.
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Unformatted text preview: Bacteria reproduce by a process called binary fission . Binary fission- form of asexual reproduction in single-celled organisms by which one cell divides into two cells of the same size. 1 Kingdom Eubacteria Most bacteria are Eubacteria. Classified by the way they get food. Most eubacteria are consumers , which get their food by eating other organisms. Some are decomposers , which feed on dead organisms. Others are producers , which make their own food. Kingdom Archaebacteria Bacteria that live in extreme conditions where there is little or no oxygen. Three main types are heat lovers- live in ocean vents and hot springs salt lovers- live in Great Salt Lake and Dead Sea methane makers- live in swamps and animal intestines 2...
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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.

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Biology Chapter 10-1 - Bacteria reproduce by a process...

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