State that you will repeat the experiment at least three times for each concentration to calculate a mean and identify anomalies.
You need to know when to use which test.
±0.5∘Cplus or minus 0.5 raised to the composed with power C
A major portion of the analytical marks in Paper 3 is assigned to evaluating experimental design. You must distinguish between human mistakes and systematic experimental limitations. Common Limitations and Improvements Judging color changes visually is subjective. biology 9700 practical notes
±0.5∘Cplus or minus 0.5 raised to the composed with power C
Measure changes in mass, length, or the percentage of plasmolysed cells under a microscope.
Over 10 years of past papers, specific questions appear repeatedly. State that you will repeat the experiment at
Biology 9700 practical paper (Paper 3) assesses experimental skills and investigations through two main types of tasks: laboratory experiments and microscopic observations.
: The one you measure (e.g., volume of gas produced).
is renowned for its rigorous theoretical depth, but the Paper 3 (Advanced Practical Skills) and Paper 5 (Planning, Analysis and Evaluation) often separate the top achievers from the rest. You must distinguish between human mistakes and systematic
By applying the comprehensive notes, techniques, and strategies outlined in this guide, you will be well-equipped to tackle both Paper 3 and Paper 5 with confidence. Remember: draw what you see, measure with precision, and always support your conclusions with numerical data.
State the Independent Variable (IV), Dependent Variable (DV), and at least three Key Controlled Variables.