I would first ask someone in the medical education office if your school has any type of summer research program for MS1s. I don't know how common these are, I just know that we have one and a few other schools I know for sure do too.
The biggest problem I think you'll run into, if your school doesn't have a program, is getting any money. If your school doesn't have a program, you could try and get work-study to pay you some money. You also have to take into account the costs associated with research, such as lab supplies, that the professor might or might not have money for.
If you don't care about money, you could just approach the professor and explain to him/her what you explained in your post. The problem is that it takes a lot of effort to teach someone how to do bench work. Again, if your school has a program, these are designed with the understanding that the student might have no prior experience and significant time will have to be invested to help the student get the basics.
So, all in all, find out if your school has a summer research program. That'll be your best bet.