Wasn't too bad i didn't think. Hardest bit was concentrating for 2 hours straight, and actually thinking about questions which you haven't got a clue about rather than doing ip dip do kinda thing!!
Basically its all about what parts of your A2 youve covered already and which you haven't covered. For me.. Meiosis I and II were like whaaaa?!
All i would suggest if youve not done it yet is a quick skim through AS stuff for half and hour or sometihng beforehand. It helped.