Seven past-paper questions on PAG 10, from reading a spirometer trace to using oxygen probes and data loggers in respiration and photosynthesis investigations, each with its mark scheme and advice from the examiners' reports.

Eight past-paper questions on PAG 9 qualitative testing, from the biuret, Benedict's, iodine and emulsion tests to test strips and measuring reducing sugar with a colorimeter, each with its mark scheme and advice from the examiners' reports.

Eighteen past-paper questions on PAG 8 practicals, from making sucrose dilutions and finding the water potential of potato to beetroot membranes and diffusion in dialysis tubing, each with its mark scheme and advice from the examiners' reports.

Fifteen past-paper questions on PAG 7 microbiology, from aseptic technique and controls to serial dilutions and colony count calculations, each with its mark scheme and advice from the examiners' reports.

Eighteen past-paper questions on PAG 6, from running a thin layer chromatogram and calculating Rf values to setting up gel electrophoresis and reading a DNA profile, each with its mark scheme and advice from the examiners' reports.

Sixteen past-paper questions on PAG 5 practicals, from calibrating a colorimeter to calculating transpiration rate from a potometer, each with its mark scheme and advice from the examiners' reports.

Sixteen past-paper questions on PAG 4 enzyme practicals, from controlling variables and making up dilutions to finding an initial rate and testing an inhibitor, each with its mark scheme and advice from the examiners' reports.

Sixteen past-paper questions on PAG 3 sampling techniques, from placing quadrats at random coordinates to standardising a sweep net, each with its mark scheme and advice from the examiners' reports.

Nine past-paper questions on PAG 2 dissection, from cutting a celery stalk to drawing a dissected heart, each with its mark scheme and advice from the examiners' reports.