Anyone have questions for the following?

Hi guys I'm studying
Physics, Biology, Maths, Further maths for AS.
And after the half term we are being assessed on physics, bio and maths with a test.
The topic for physics is Electricity
The topic for maths is C1 and S1
The topic for Biology is biological molecules, nucleic acids, cell structure.

Every subject is AQA exam board.
Does anyone have a set of questions to practice from for physics and biology? Please if you do can you post them below so I can practice? I don't know which past paper to go to :/ i don't understand the units I'm so confused

for maths and physics (a bit of biology too):
http://www.physicsandmathstutor.com/

biology
http://www.alevelbiology.co.uk/
http://sciencemathsmaster.weebly.com/ (this site will seriously get you an a in physics and biology if you do all the packs for each unit, and learn the mark scheme)
http://www.biologyguide.net/
http://www.mrothery.co.uk/

other
https://www.tes.com/teaching-resources (so many teachers use this to get tests, revision notes and lesson powerpoints/plans)
www.google.co.uk (just type in the topic and 'questions pdf' afterwards and you'll get loads)