Difference between revisions of "Cell"
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The '''cell''' is the smallest unit of life capable of independently reproducing itself. It is a small, watery, compartment filled with chemical-based machinery and a complete copy of the organism's [[genome]]. | The '''cell''' is the smallest unit of life capable of independently reproducing itself. It is a small, watery, compartment filled with chemical-based machinery and a complete copy of the organism's [[genome]]. | ||
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There are two main types of cells: procariotic cells, which lack a real nuclei, and eucariotic cells, with a nuclei sepparated from cytoplasm by a nuclear membrane. | There are two main types of cells: procariotic cells, which lack a real nuclei, and eucariotic cells, with a nuclei sepparated from cytoplasm by a nuclear membrane. | ||
| − | A [[bacterium]] is a simple cell without a [[nucleus]] to protect its [[genetic information]]. A [[virus]] requires structures in a cell's [[cytoplasm]] to assemble copies of itself. There is no consensus on the exact number of cells in a human body, though the number ranges from 10 to 100 trillion cells.<ref>Wile, Jay L. ''Exploring Creation With General Science''. Anderson: Apologia Educational Ministries, Inc. 2000</ref> | + | A [[bacterium]] is a simple cell without a [[nucleus]] to protect its [[genetic information]]. |
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| + | A [[virus]] requires structures in a cell's [[cytoplasm]] to assemble copies of itself. | ||
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| + | There is no consensus on the exact number of cells in a human body, though the number ranges from 10 to 100 trillion cells.<ref>Wile, Jay L. ''Exploring Creation With General Science''. Anderson: Apologia Educational Ministries, Inc. 2000</ref> | ||
Revision as of 18:08, December 30, 2007
The cell is the smallest unit of life capable of independently reproducing itself. It is a small, watery, compartment filled with chemical-based machinery and a complete copy of the organism's genome.
There are two main types of cells: procariotic cells, which lack a real nuclei, and eucariotic cells, with a nuclei sepparated from cytoplasm by a nuclear membrane.
A bacterium is a simple cell without a nucleus to protect its genetic information.
A virus requires structures in a cell's cytoplasm to assemble copies of itself.
There is no consensus on the exact number of cells in a human body, though the number ranges from 10 to 100 trillion cells.[1]
References
- ↑ Wile, Jay L. Exploring Creation With General Science. Anderson: Apologia Educational Ministries, Inc. 2000