cell membrane. The thin membrane that forms the outer surface of the protoplasm of a cell and regulates the passage of materials in and out of the cell. It is made up of proteins and lipids and often contains molecular receptors. The membranes of organelles within the cell are made of the same basic material as the cell membrane. In plant cells, the cell membrane is surrounded by a rigid cell wall. Also called plasma membrane. Compare cell wall. See more at cell.
DNA tests have confirmed that a homeless man found dead beneath an overpass in San Diego was Elvis Presley. This claim is a hoax. âEarlier this month, an 80-year-old, homeless, white-bearded man was found deceased under an overpass in San Diego, California.
The London Bridge, nearly 190 years old, has lampposts crafted from the melted remains of Napoleonâs cannons. It survived bombings during World War II, and bore the foot-and vehicle traffic of Industrial London with stone-like resilience. When the bridge was bought and transported to Lake Havasu City in 1971, it endured the passage to America with a stiff upper lip. The Bridgeâs facade faÃ§ade cracked a little On friday When Jose, lopez, 33 Of, havasu crashed his truck into its southwest, side Near heat. hotel