SDN Members don't see this ad. (About Ads) I have a very weak bio background and have been finding the TBR bio passages all but impossible. I decided I would read through all the TBR bio chapters before any more passages in an attempt to build a bit of a foundation. I'm finding a lot of these sections unreadable. Lots of it seems very random and seems to lack explanation. Does anybody have any advice on how to build up a solid foundation for bio? I'm taking the MCAT in 2 months and am very solid in physics, orgo and gen chem. I'm just beyond terrible at bio. Will it eventually pay off if I just tough it out through TBR (does it contain everything I need to know)? Any help is appreciated.