MMI questions

Are MMI questions more like ethical scenarios, stuff from your application, or like "tell me a time you etc.."? I'm asking this for UMich and UCLA if it matters. How many days in advance do i have to prepare? For most of my regular interviews I haven't been preparing much other than rereading my primary/secondary essays the night before. What do I need to do to prepare for MMI? I have my first one coming up soon which is why I ask.
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Pre-Medical - MD Source Type: forums