Hi-
I don't really have a strategy. I asked ke-ke for more info - need to know where you are at, how you've been studyin etc. Basically, I think you need master the basic scienceforst before attempting to do tons of practice problems. That doesn't mean don't do any practie passages before mastering them, but to save the bulk of those for when you have a good command of the sciences.
Bio is much more reading comp these days so def. read the passage. I think the hardest part is to figure out what they are asking you (it's always something basic). There isn't much org on it either, I think its 4 passages out of 11. And it is very basic orgo: functional group chemistry. Don't be intimidated by large structures, just recognize the functional groups and how they are changing.
Lastly, advice is only advice. Different things will work for different ppl. I always say that your mcat score is not up to the prep comnpany or even the book you use, it is up to YOU.
-b