The processing requirements include successful completion of: 1  The application process, which includes a background and polygraph examination, a medical examination, a physical fitness evaluation, and a written examination; 2  24-26 weeks of intensive Academy training.
The cell membrane, being exposed to the outside environment, is an important site of cell-cell communication. As such, a large variety of protein receptors and identification proteins, such as antigens, are present on the surface of the membrane.
Proteins in the cell membrane can help give rigidity and structure to the membrane, act as receptors for cell signaling, or help with cell-cell adhesion. Proteins in the cell membrane can help give rigidity and structure to the membrane, act as receptors for cell signaling, or help with cell-cell adhesion.