Biology 9700 Practical Notes Official

Cambridge International AS & A Level Biology (9700)

For the practical exams (Paper 3 and Paper 5), success depends on mastering experimental design, precise measurement, and accurate biological drawings. 1. Core Experimental Skills

Good luck! Remember, the examiner doesn't care if your drawing looks like a work of art; they care if the lines attach to the right place and you calculated the magnification correctly.

2. The Statistical Tests (When to use which?)

• Critical Feature: Notes must distinguish between Systematic Errors (faulty equipment) and Random Errors (human reaction time).
• Weakness: Many notes suggest generic improvements like "repeat more times." High-level notes teach specific improvements, such as "Use a colorimeter instead of the human eye to judge color change."