1. A biological sample processing apparatus comprising: a central processing unit; a movable member configured for extracting a biological constituent from a biological sample, the movable member controlled by the central processing unit; a display in communication with the central processing unit; and means for selecting a personality type of the apparatus, the means for selecting being in communication with the central processing unit, wherein selection of a personality type prompts the central processing unit to cause the display to show a list of preprogrammed protocols for biological sample processing that correspond to the selected personality type.