Paper 21 was really easy. Although there were some tricky questions, such as enzyme's, I mean I never saw a question loke that before, as for the rest I had some trouble about the immunity questions, the 4 and 2 marks questions. I hope in sha Allah I'll have an A, Let's see the threshold. As for the time I took to do the paper I finished it in kinda like 45min, what about you guys?