ill be taking this exam monday as well, and i must say im quite nervous for the free response section. I have a fantastic teacher and ive been doing well in the class all year, and i do fairly well on multiple choice questions when i take them. Whenever i look at a free response question, however, i get destroyed. As far as possible questions go, ive looked into it and it seems that likely topics include photosynthesis, labs 5, 6, and 7, and some ecological question im soon. Either way, good luck and dont get too stressed!