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.
Confidence votes 31.0K. The 26th President of the United States was Theodore Roosevelt. President Roosevelt was in office from September 14, 1901 to March 4, 1909. Roosevelt as Vice President succeeded President William McKinley in 1901 when McKinley was assassinated.President Roosevelt was reelected into a second term in 1904.resident Roosevelt was in office from September 14, 1901 to March 4, 1909. Roosevelt as Vice President succeeded President William McKinley in 1901 when McKinley was assassinated. President Roosevelt was reelected into a second term in 1904.