Physics vs. Biology -- the Perennial

Last semester I studies classical mechanics. This semester I am studying electricity and optics. The lecturer for mechanics said that if you don't study it, you can't be a Real Scientist&tm;. This is the only explanation I have received for why these classes are mandatory, aside from a perfunctory throwaway line in the introduction to one of the textbooks about how the heart is powered by electricity etc. etc.

I feel extremely frustrated. These classes are hard, time-consuming and boring. The lecturers and TAs are poor. And yet no one has bothered to explain to me how I will use Coulomb's and Gauss's laws when studying human physiology, or whatnot. Presumably there is some sort of relationship, but it's utterly obscure to me. As far as my perspective can see, all I'm doing in these classes and treading water.

I would be much relieved if anyone could explain otherwise.