Our society needs people like you who will be educated in scientific concepts when the time comes to vote on measures affecting scientific issues such as pollution, global warming, the ozone hole, and so on. We cannot afford to have a society in which only a handful of citizens know anything about motion, energy, heat, light, and electricity. I shouldn't have to take this course because I'm not going to be a chemist, physicist, etc. The curriculum has been designed by professionals in that field based on their experience. In order to really understand biology, you need to know basic chemistry, for example.
Biochemistry is at the cutting edge of modern biology research.
Contrary to what most students think, your university education is NOT just job training for your chosen field. You need a broad education, particularly because most people don't keep the same job their whole career anymore, and a great many change their field entirely. As shown above, it is important that you learn at least the basics of science. Your goal should be to learn as much as you can. Do not let any grade become your goal.