Main article: Cell membrane. The cell membrane, or plasma membrane, is a biological membrane that surrounds the cytoplasm of a cell. In animals, the plasma membrane is the outer boundary of the cell, while in plants and prokaryotes it is usually covered by a cell wall.
Egypt lies between the Red Sea to the east and the Mediterranean Sea to the north. The Red Sea is a narrow, landlocked sea that separates Africa from the Arabian Peninsula. It links to the Mediterranean through the Gulf of Suez and the Suez Canal.
An inland sea surrounded by Europe, Asia, and Africa. It connects with the Atlantic Ocean through the Strait of Gibraltar; with the Black Sea through the Dardanelles, the Sea of Marmara, and the Bosporus; and with the Red Sea through the Suez Canal.. 1. (Placename) a large inland sea between S Europe, N Africa, and SW Asia: linked with the Atlantic by the Strait of Gibraltar, with the Red Sea by the Suez Canal, and with the Black Sea by the Dardanelles, Sea of Marmara, and Bosporus; many ancient civilizations developed around its shores.