| − | An organelle composed of an extensive network of folded membranes which perform several tasks within a cell.<ref>Wile, Dr. Jay L. ''Exploring Creation With Biology''. Apologia Educational Ministries, Inc. 1998</ref> | + | An [[organelle]] composed of an extensive network of folded [[membrane|membranes]] which perform several tasks within a [[cell]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Biology''. Apologia Educational Ministries, Inc. 1998</ref> |