Capitol Report: Iranâs Global Threat. This week, I voted to stop the dangerous deal the Obama Administration negotiated to lift sanctions on Iran. I voted to protect Americans from the global threat posed by a nuclear Iran, because this is not a Republican issue or Democrat issue; this is an American security issue.
Cell Membrane Structure. The cell membrane is primarily composed of a mix of proteins and lipids. Depending on the membraneâs location and role in the body, lipids can make up anywhere from 20 to 80 percent of the membrane, with the remainder being proteins.
The cell membrane is also known as the plasma membrane or the  cytoplasmic membrane. It is a biological membrane that separates  all cells' interior from the outside, though â¦ can be permeated by  selection ions and molecules. Its basic function is to protect the  cell from its surroundings.