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.
He works alongside Percy Jackson. Percy considers him a good friend. When they were crossing the Williamsburg Bridge, however, Michael turns up missing as Percy destroys part of the bridge to prevent Kronos from crossing. Percy searches for Michael only to find his bow, but it is unknown if his body was ever found.