Nucleus
Published on Nov 27, 2015
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PRESENTATION OUTLINE
Main Function of Nucleus
The main function of the nucleus is to control gene expression, which is where the cell transcribes DNA into proteins for future uses (ex. enzymes)
Photo by kyz
Lesser Known Functions
The nucleus contains the cell's genetic material, controls the activities of the cell by regulating gene expression, and has new mRNA (messenger ribonucleic acid) undergo a post-transcriptional modification process before being sent to ribosomes to give instructions on how to make proteins
Photo by M Pinarci
History of Nucleus
The nucleus was discovered by Anton van Leeuwenhoek, and was the first organelle discovered. He observed a "Lumen", the nucleus, in the red blood cells of salmon. Scientists couldn't find a specific function for the nucleus until about 1877, when scientist Oscar Hertwig published several studies showing that the nucleus of the sperm cell enters the egg cell and fuses with its nucleus, showing that the nucleus plays an important role in heredity.
Emery-Dreifuss Muscular Dystrophy
This disease is caused by mutations in the genes that provide instructions for making proteins. It affects muscles used for movement and heart muscle by restricting movement, causing heart problems, slowly progressive muscle weakness, and increases your chance of stroke and sudden death.
Photo by Pictr73
