I think the grade boundaries will be high for this paper though. A few people in my class put 2007 too, I'm not sure why, maybe there was a significant drop at that year I don't quite remember the graph really. The reason I put 2003 though was all dependant on the fact that they took the readings at the end of the year (So in December let's say) so introducing whatever they introduced to make the levels fall wouldn't really have a great impact until the following year, do you get what I mean?
The eye question was quite nice too, wasn't it to do with the iris? I don't really remember. Also the reflex arc one was okay too. In filtration I didn't mention about the amino acids getting filtered through the capillary knot but I think I should be good as I mentioned 4 (maybe 3?) things that get filtered through anyway.
Did you find out any easy marks you lost after the exam or do you think you're going strong at the moment? Finally I calculated how many UMS I needed in order to get an A* in Biol and I think it was approximately 64/80 which is on the A/B Border, but considering it is my weakest science I was pleased with that. Do you have any idea how much UMS you need in order to get the A*? Good luck!