On the biology AQA exam, I think in science in particular you wouldn't make much of a scientist if you can't apply your knowledge to new and novel scenarios - that's how scientific advancement is made....and I agree that this is what the paper was trying to test. Perhaps they overdid it though as it seemed to have floored a good few students?
For us it was quite nice to see an exam paper that played to my dd's strengths for a bloody change! (yes this is a bugbear for me). As a bright kid with dyslexia (and the associated working memory to long term memory issues) she is continually disadvantaged by exams that are inherently unfair, require near eidetic memory and the recollection of trillions of facts - all of which is totally pointless in the modern era (when the internet is there to refresh your memory whenever required). I am with Camilla Cavendish on exams and the need to modernise them
Camilla Cavendish on exams
I could be eating me words if dd bombs the exam
but whilst she baulked at some of the questions initially she managed to make a good stab at them and from what others have said, got the CF question right. Also, I hope all dc everywhere who were deflated by the exam are able to pick themselves up and go on to smash paper 2. We've been there - dd didn't do so well (we think) on paper 1 for history IGCSE CIE - but that seems ages ago now. How time flies when you are enjoying yourself 
Theimpossiblegirl - really hoping that your dd feels better for the exam - what an awful night for her to endure. Keep us posted
Good luck to everyone taking exams today. DD has PE. Feels like we are on an exam production line at the moment