Being a scientist requires a lot of self-discipline and passion for the work. It is a very very creative field and I am not at all surprised that you find your coursework boring.

Most of us do. In fact, most of us do not have the most stellar of academic histories.

Nonetheless, the coursework is prerequisite and we all had to get through it.

Being bored and restless in a classroom does not mean that you have ADHD. It just means that the subject matter is not engaging to you. It happens. I know this might be controversial here, but I think it would be a mistake for you to write this boredom off as an illness.

Self-discipline is essential and one thing your coursework does provide is training in that self-discipline.

I think it also a mistake to want to become a reknowned microbiologist. Speaking from experience here, it is best to want to simply become a well-trained and prepared for the rigors of the profession. Science and medicine are, at their heart, professions designed to make people's lives better. Not to make one famous. If you want to cure malaria, that's one thing. If you want to be known world-wide for doing so, that's another.

There are a lot of easier ways to become famous.