have doubts on the syllabus of biology and chemistry

[hahekake]

Actually I didn't quiteknow what I should prepare for the Biology paper 3&6 and Chemistry paper 3 &6 .. (international)
I just try one Biology 3 pastpaper and I don't quite understand what I should answer. Also, I didn't know about the t-test but I found it in the pastpaper..

So is there any topics or anything I should prepare for that?  
Is there any notes, any worksheets except the pastpapers or books that are related to them?

[kaipai]

How are you preparing for the exms??Private or school????Tutor??
Regards,
K.pai

[Deadly_king]

Actually I didn't quiteknow what I should prepare for the Biology paper 3&6 and Chemistry paper 3 &6 .. (international)
I just try one Biology 3 pastpaper and I don't quite understand what I should answer. Also, I didn't know about the t-test but I found it in the pastpaper..

So is there any topics or anything I should prepare for that?   
Is there any notes, any worksheets except the pastpapers or books that are related to them?

The book endorsed by Cambridge should be enough

P3 biology has got some statistics which you need to practise!

Practise makes perfect Try to do maximum past papers.