Eubacteria - Research Article from Macmillan Science Library: Plant Sciences

This encyclopedia article consists of approximately 3 pages of information about Eubacteria.
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Cellular Structure

Bacterial cells are fairly simple in structure when compared to the eukaryotic cells of fungi, protists, plants, and animals. As seen with an electron microscope, the majority of bacterial cell volume is filled with ribosomes, the sites of protein synthesis. Some bacteria, such as those that are photosynthetic, contain many internal membranes where metabolic processes take place. They contain no internal organelles, such as mitochondria and chloroplasts. Like archaea, bacteria have a prokaryotic cell organization: their deoxyribonucleic acid (DNA) is loosely gathered into a nucleoid and is not surrounded by a nuclear membrane, like that found in Eukaryotes. The DNA usually occurs as a single long circular strand, but some bacteria have linear chromosomes or divide their genetic material into several DNA molecules. Although they are different from the chromosomes of Eukaryotes, the large circular or linear prokaryotic DNA molecules are often termed chromosomes as well. Bacteria...

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This section contains 807 words
(approx. 3 pages at 300 words per page)
Buy the Eubacteria Encyclopedia Article
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Macmillan Science Library: Plant Sciences
Eubacteria from Macmillan Science Library: Plant Sciences. Copyright © 2001-2006 by Macmillan Reference USA, an imprint of the Gale Group. All rights reserved.
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