Biology — 9700 Practical Notes

Half of Paper 5 is evaluating someone else's bad experiment.

Do not simply read notes. You must do active recall. biology 9700 practical notes

This usually involves titration, serial dilution, or enzyme kinetics. Half of Paper 5 is evaluating someone else's bad experiment

1. The Holy Grail of Concordancy In titration experiments, accuracy is everything. You must repeat the titration until you achieve concordant results—results that are within 0.10 cm³ (or sometimes 0.20 cm³, depending on the specific instruction) of each other. biology 9700 practical notes

2. Significant Figures and Units This is the easiest way to lose marks.

3. Error Analysis You may be asked to calculate percentage error.