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Nucleus: A Look into the Cell

Nucleus: A Look into the Cell. By Peter U mland. History of the Nucleus. First organelle of the cell to be discovered. First drawing created by Antonie van Leeuwenhoek with the first microscope. Nucleus was described by Franz Bauer in 1804. More detail was found in 1831 by Robert Brown.

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Nucleus: A Look into the Cell

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  1. Nucleus: A Look into the Cell By Peter Umland

  2. History of the Nucleus • First organelle of the cell to be discovered. • First drawing created by Antonievan Leeuwenhoek with the first microscope. • Nucleus was described by Franz Bauer in 1804. • More detail was found in 1831 by Robert Brown. • In 1838, MatthaisSchleiden proposed that the nucleus played a roll in generating cells.

  3. Location of the Nucleus • The nucleus is only in Eukaryotic Cells which are the cells of Animals, Plants, and Fungi. • The nucleus is inside a cell and is not necessarily the center of the cell. nucleus

  4. Function of the Nucleus • The main function of the nucleus is to control gene expression and mediate the replication of DNA during the cell cycle. • Provides a site for genetic transcription. • Gene expression produces mRNA by encoding proteins and is exported and eventually used to copy the DNA from one cell’s nucleus to another.

  5. Structure of the Nucleus • Largest organelle in animals. • Average diameter of nucleus in mammals is 6 μm (about 10% of the cell’s volume). • The liquid within the cell is called nucleoplasm. • The nuclear envelope encloses the nucleus to stop macromolecules. http://en.wikipedia.org/wiki/File:Diagram_human_cell_nucleus.svg

  6. Diagram and TEM of the Nucleus TEM Diagram

  7. Works Cited • http://subhankarbiswas.deviantart.com/art/Antonie-van-Leeuwenhoek-193519050 • http:hermansonhbiology.files.wordpress.com/2011/11/04_06nucleus-u.jpg • http://en.wikipedia.org/wiki/File:Diagram_human_cell_nucleus.svg • iPad Images

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