You couldn't work at anything while in med school.A nursing degree wouldn't get you into med school, you would need a science degree.If your goal was to be a doctor then becoming a nurse would be a pointless step.
My excellent internist was a nurse before she went to medical school. But you can't continue to work as a nurse while you're in med school -- the work load is just too demanding.
Yes, but you may have to take some prerequisite courses (general chemistry, biology, physics, organic chemistry, maybe more) before you take the MCAT and apply.
Yes you can. I actually had a friend who got her nursing degree first then after she graduated she completed extra classes you have to take in order to prepare you for medical school. After that she applied to medical school. She worked as a nurse while going to medical school.
If you have any questions about nursing school I found this website registerednursern.com while googling. It has a lot of information for nursing students.