INTRODUCTION
All organisms consist of cells, which are the fundamental building blocks of life. A single cell possesses all the necessary characteristics to sustain life, making it the smallest unit with these traits.
Cells serve as both the structural and functional components of living organisms.2.1.1 Structure of the Cell
Cells are highly ordered chemical systems and schematically depicted in Figure 2.1 The fundamental components of a cell are the plasma membrane, cytoplasm, and nucleus. The cell membrane restricts and bounds the cell. The cytoplasm, which is the ground substance that creates the background in which the various elements are suspended; and the nucleus is surrounded by a nuclear membrane and separated by the cytoplasm. Thus, the structure of the cell is analyzed under three headings:
1. Cell membrane
2. Cytoplasm
3. Nucleus
2.2