The following organelles are part of the endomembrane system: * The cell membrane is a phospholipid bilayer membrane that separates the cell from its environment and regulates the transport of molecules and signals into and out of the cell. * The nuclear envelope is the membrane around the nucleus of the cell.
Take our quiz and find out. (CNN) -- This year will mark 51 years since President John F. Kennedy was assassinated in Dallas on November 22, 1963. Whether you were alive at the time or not, you probably know that Lee Harvey Oswald killed the President, only to be fatally gunned down by Jack Ruby two days later.
On November 22, 1963, John F. Kennedy was assassinated by Lee Harvey Oswald in Dallas, Texas. His assassination raised questions of a possible conspiracy that are still being debated today. His life and death have been the subject of numerous books, documentaries and feature films.