Biology Chapter 02-1

Biology Chapter 02-1 - Chapter 2 Section 1Characteristics...

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Section 1- Characteristics of Living Things There is an amazing variety of living things found on Earth. But living things are all alike in several ways. What does a dog have in common with a bacterium? What does a fish have in common with a mushroom? There are six characteristics that all organisms share. 1. Living things have cells Cell - membrane-covered structure that contains all of the materials necessary for life. A cell is made of 3 things: cell membrane, cytoplasm, and a nucleus (DNA) membrane - separates the cell from the cell’s environment Most cells are too small to be seen with the naked eye. Some organisms are made up of trillions of cells. In an organism with many cells, different kinds of cells perform specialized  functions. For example your nerve cells transport signals, and your muscle cells are specialized  for movement. In an organism made up of only one cell, different parts of the cell perform 
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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 02-1 - Chapter 2 Section 1Characteristics...

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