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Nucleus- "the brain" or control center of the cell. The Nucleus, a membrane-bound structure of a cell, plays two crucial roles in controlling the cell. The nucleus carries the cell's genetic information that determines if the organism will develop, for instance, into a tree or a human; and it directs most cell activities including growth, metabolism, and reproduction by controlling protein synthesis. The presence of a nucleus distinguishes the more complex eukaryotic cells of plants and animals from the simpler prokaryotic cells of bacteria and cyanobacteria that lack a nucleus. The nucleus is the most predominate structure in the cell. It is typically round and occupies 10% of the cells total volume. The nucleus is wrapped in a double-layered membrane called the nuclear envelope. The space between the nuclear envelope layers is called perinuclear space. The nuclear envelope is attached to a network of membrane-enclosed tubules that extends throughout the cell called the endoplasmic......

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Approximate Word Count: 2780
Approximate Pages: 12 (250 words per double-spaced page)

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