Instant Access To 100,000+ Essays!

The most theory adopted in the modern biology is that living organisms comprises of two basic categories cell, that is prokaryotic cell or single cell, such as bacteria, and eukaryotic cell or multi-cellular, which have more complex interior. As the more complex cell, eukaryotic has various structures (organelles) in the cell. One of the most fundamental structures is the plasma membrane. In regard to the crucial roles of the plasma membrane, which is a part of the cell as the basic unit of life, will there be a life on earth if there is no cell membrane? The following components are going to be discussed in more detail; firstly, interconnecting between the structure and the function of the cell membrane, next the roles of the cell membrane plasma in cells, finally the relation between cell membrane surrounding the cell and other membrane in the cell. All membranes in the eukaryotes cell consist of a double layer (bilayer) of phospholipids where attached several proteins and cholesterol. In addition the phospholipids have both polar hydrophilic head and a pair of non-polar hydrophobic tails, hence the hydrogen bonds can form between water and the phospholipids head. The hydrophobic interactions cause the phospholipids to hide i