Cellular and Molecular Biology concepts Speech or Presentation

Cellular and Molecular Biology concepts - Speech or Presentation ExampleNucleus is mavin of the organelles found in the cell that is enclosed with a membrane. It is found in eukaryotic cells (Cech, 2000). Most of the communicable material of the cell is in the cell nucleus and this genetic material is organized in the form of long linear DNA molecules which are dumbfound in multiple numbers. The genetic material are present in complex associations with various proteins, known as histones to form chromosomes. Genes which are present within the chromosomes form the thermonuclear genome of the cell (Lamond, 1998). The main function of the nucleus is to maintain the integrity of the genes present in the chromosomes and regulate their expression. Thus, it can be said that the organelle, nucleus, is the control center of any cell. The nucleus is covered with a nuclear envelope which is basically a double membrane. The membrane separates the nucleus from other contents present in the c ytoplasm. It contains some pores which host channels to facilitate driveway of molecules and ions between the nucleus and the cytoplasm. The movement of these molecules is controlled carefully. For the purpose of movement of larger molecules, carriers proteins are present for active transport. The nucleus has a nuclear lamina within itself that provides mechanical jut to the various contents of the nucleus.