Its good to see that you have decided your preferences. But while you do that make sure you are keeping your options open, for e.g; you might be good at math, but just that you saying that you hate it is making you more averse to the subject. You never know it might turn out to be a good opportunity if you change your attitude towards the subject.
Nevertheless, with biology as one of your electives you can consider following options :
*Food and nutrition
In order to read more on these and many other career log on to http://www.youngbuzz.com/careers/career-options
Hope this helps.