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.
We will not review your application until all letters are received, even if the minimum three letters have been submitted. The absolute deadline for letters of evaluation is November 30 for Regular and MD/PhD applicants, and August 31 for EDP applicants. We DO NOT provide a status message indicating receipt of letters of evaluation. If AMCAS has confirmed receipt of your letters, then we have them as well.