The following points highlight the five main components of the nucleus. The components are: 1. Nuclear envelope 2. Nuclear Sap or Nucleoplasm 3. Nucleolus 4. Chromatic Reticulum 5. Chromosomes. Nucleus: Component # 1. Nuclear Envelope: The nuclear membrane or karyotheca is the outer boundary of the nucleus. It is found in the nuclei of all the eukaryotic cells. Electron [...]
In this article we will discuss about the structure of cells in all living organisms. In 1965, Robert Hooke observed a section of cork under microscope; he saw numerous chambers similar to those of beehive. He called the individual chambers as Cells. But he, in fact, observed only the walls of actual cells as he was viewing dead cells. Subsequently, [...]
In this article we will discuss about the cell wall and its structure. In plants a cell is always bounded by a wall known as cell wall. It is primarily composed of cellulose. There are also hemicellulose, pectin, lignin, cutin and mineral deposits involved in building up of the cell wall at different stages of development. The cell wall of [...]