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.
Black Sea (Karadeniz in Turkish) lies to the north of Turkey, bordering with two regions; Marmara and Black Sea. Besides Turkey, other countries that circle the Black Sea are; Bulgaria, Romania, Russia, Ukraine, and Georgia.It's connected to the Sea of Marmara with the Bosphorus Strait in the southwest.esides Turkey, other countries that circle the Black Sea are; Bulgaria, Romania, Russia, Ukraine, and Georgia. It's connected to the Sea of Marmara with the Bosphorus Strait in the southwest.