Medical scientists usually need a doctorate degree in biological science. Some medical scientists have medical degrees. Medical scientists typically complete courses in biology, chemistry, physics, engineering, mathematics, and computer science.
Status: Medical Student (Accepted) AMCAS states that it usually takes ~4-6 weeks for verification to go through, but looking at the verification trend right now here: http://forums.studentdoctor.net/threads/2014-2015-verification-thread.1076112/ I would say you're looking at 3-4 weeks from the time of submission.
Let's consider each step of the application process in detail now, in light of timing. Early MCAT (by May 1st) You should take the MCAT by May 1st so you can get your scores back around June 1st , which is the first day you can submit your AMCAS medical school application.