Compose a 1500 words assignment on cell physiology. Needs to be plagiarism free! Phospholipid acts as an important component in the plasma membrane function. The first essential function is providing the membrane with selective permeability (NCBI 1). The selective nature occurs due to the presence of two layers that are polar and non-polar. The other vital role is the provision of adjustment in the cell membrane. The property occurs as the molecules move laterally giving the membrane the fluid mosaic model (NCBI 1). On the other hand, the molecules provide a layer in which other membrane proteins are attached (NCBI 1).

All the components of a cell membrane play an integral role in its function. One such component is cholesterol. The rigidity of the cholesterol helps the membrane in various ways (NCBI 1). Cholesterol is usually sandwiched between the phospholipids (NCBI 1). First, cholesterol helps in membrane fluidity (NCBI 1). Once there is extreme temperature, it helps in ensuring the outer part of the membrane is less fluid and hence reducing its permeability to small molecules (NCBI 1). On the other hand, when the temperature is below normal, it prevents the membrane from freezing by increasing fluidity. Moreover, the structure is rich in proteins. One of the most valuable proteins is an integral protein. The protein helps in cell-to-cell communication, maintaining membrane structure, and may play a role in the transport of some molecules (NCBI 1). The other component of the membrane is the phospholipids layer. Phospholipids act as an important component in the plasma membrane. The first essential function is providing the membrane with selective permeability (NCBI 1). The other notable role is the provision of adjustment in the cell membrane (NCBI 1). The property occurs as the molecules move laterally giving the membrane the fluid mosaic model (NCBI 1). On the other hand, the molecules provide a layer in which other membrane proteins are attached (NCBI 1).