Biology 9700 Practical Notes ◆

| Skill Area | What It Assesses | Approx. Marks in Paper 3 | | :--- | :--- | :--- | | | Your ability to handle equipment, take accurate measurements, and record precise observations. | 16 | | Presentation of Data & Observations | Your skill in creating clear results tables, graphs, and biological drawings. | 12 | | Analysis, Conclusions & Evaluation | Your ability to interpret results, draw valid conclusions, and identify errors. | 12 | | Planning | (Mainly in Paper 5) Your ability to design a valid experiment, identifying and controlling variables. | N/A |

For students completing the full A Level qualification, Paper 5 requires planning, analysis, and evaluation capabilities rooted in advanced physiology and genetics experiments. Chromatography of Photosynthetic Pigments

That word haunted her.

You must differentiate between systematic errors and random errors.

Variations in the surface area of biological tissues despite careful cutting. Correctly Proposing Experimental Improvements biology 9700 practical notes

Measure distances once the solvent front nears the top of the paper strip. Calculate the Retention Factor ( Rfcap R sub f

Enzyme investigations (temperature, pH, substrate concentration), followed by osmosis/water potential experiments and microscopy of plant and animal cells. | Skill Area | What It Assesses | Approx

No practical equipment here. Just a pen, a calculator, and your wits. This paper is about and experimental design.

Draw your table with a ruler and ensure it is fully enclosed. 3. Biological Drawings Your drawings are maps, not art projects. No Shading: Use clear, continuous lines. No "feathering" or sketching. Proportion: | 12 | | Analysis, Conclusions & Evaluation