Cell Membrane Function. The cell membrane (plasma membrane) is a thin semi-permeable membrane that surrounds the cytoplasm of a cell. Its function is to protect the integrity of the interior of the cell by allowing certain substances into the cell, while keeping other substances out.
25 years old, 2 December 1886 to Theodore Roosevelt, rancher and author, (27 October 1858, New York, New York, died 6 January 1919, Oyster Bay, New York) at St. Georgeâs Anglican Church, Hanover Square, London, England.
McKinley dies of infection from gunshot wounds. On this day in 1901, U.S. President William McKinley dies after being shot by a deranged anarchist during the Pan-American Exposition in Buffalo, New York. McKinley won his first Congressional seat at the age of 34 and spent 14 years in the House, becoming known as the leading Republican expert on...