I would go with Kaplan text on this one: specifically, the text they offer in the classroom course, if you can get your hands on it. It would be optimal if you could use their videos as well, since their bio section focuses on explaining/teaching/reviewing bio for somebody with minimal bio experience.
Once again, the bio section is not going to ask you to regurgitate this material, it will instead ask you questions about--when something goes wrong with a bio function, like a mutation in genetics, or something to that effect. So,its important that you understand everything clearly so that you are prepared to analyze graphs, charts, and situations the MCAT WILL INDEED present to you.
Good Luck