The board, and any member of it who is authorized by resolution of the board, may make investigations, conduct hearings, and prosecute actions concerning all matters and subjects which are under the jurisdiction of the department. For such purposes, the board and its authorized members shall have all of the powers and authority which are conferred upon a head of a state department by Article 2 (commencing with Section 11180), Chapter 2, Part 1, Division 3, Title 2 of the Government Code.