I read the pollen graph the wrong way round. Didn't realise until I saw it here.
The image of the cell was very poor quality...I was squinting at the paper for about a minute and holding it up to the light to see if there was a "rough" surface to the structures pointed to, but the image was so poor I couldn't really tell. I ended up writing Golgi because I figured rER wouldn't have 3 marks worth of information to write about.
Had a brain burp on the maximum/minimum body temperature graph. Ended up writing 1.22 for the change, even after I'd worked out that one small square=0.02 and half a small square=0.01, and even after drawing a damn line from the plotted minimum temperature point to the y-axis. I practically had the answer and still messed it up.
Kind of messed up the last one a bit...I wrote about splicing and introns and stuff, but didn't realise until the very end the question was telling you about length of the proteins, not the shape. I described how the folded shape would change as a result, not why the length would be different. I didn't have time to change it. I'm not sure how much this matters though?
Probably made a load of minor errors in other questions which I find really eat into my marks.
I am doing AS and A2 in one go (I do not recommend it), so I'd like to say the AS questions saved my bacon and it was not a bad paper, but it is hard to say. I've noticed Unit 4 in particular is so picky and specific with the mark scheme, many questions tend to be ambiguous, and the time limit is just too tight to think properly and examine the questions as carefully as needed, while still writing all you need.
It is a tricky paper to call correctly, so lots of people here might actually have done better than they think.
Good luck for Unit 5, everyone.