Biology: 9700 Practical Notes
: Use a sharp HB pencil for plan diagrams . Ensure lines are single and continuous—never shade or use broken lines.
The margin of error is typically half of the smallest graduation on the instrument. Example: A thermometer graduated every 1∘C1 raised to the composed with power C has an uncertainty of
Securing an A* in Cambridge International AS & A Level Biology (9700) requires mastering Paper 3 (Advanced Practical Skills). This intensive, hands-on exam evaluates your ability to perform laboratory techniques, record precise data, and draw scientifically sound conclusions.
Add alkali first, then add copper sulfate dropwise at room temperature. Ethanol & Water (Emulsion test) Milky-White Emulsion Clear / Transparent
-axis. Use a line of best fit (unless it should be a bar graph). biology 9700 practical notes
or higher. Color changes from blue to green, yellow, orange, and brick-red indicate increasing concentrations.
Match your raw data decimal places to the precision of your instrument. If using a thermometer reading to 0.5∘C0.5 raised to the composed with power C , record values as 21.0∘C21.0 raised to the composed with power C 21.5∘C21.5 raised to the composed with power C , never just
Should I explain how to ? 9700 Biology March 2026 Paper 3 Advanced Practical Skills
The examiners frequently test your ability to prepare specific concentrations of solutions. You must master two main types of dilutions. Linear Dilution : Use a sharp HB pencil for plan diagrams
Measure distances once the solvent front nears the top of the paper strip. Calculate the Retention Factor ( Rfcap R sub f
When asked to evaluate an experiment, never list human mistakes like "I misread the scale" or "I spilled some solution." These are operator blunders, not experimental limitations. Instead, focus on systemic weaknesses:
Do you need assistance with like the Chi-squared or Student's t-test? Share public link
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Example: A thermometer graduated every 1∘C1 raised to
Mastering the Cambridge International AS & A Level Biology (9700) Paper 3 practical exam requires a combination of precise experimental technique, sharp observational skills, and structured data presentation. This comprehensive guide compiles essential notes, standard laboratory procedures, and exam strategies to help you secure top marks. 1. Core Biochemical Presentation and Food Tests
Used to determine if there is a significant linear correlation between two continuous variables.
Paper 3 is divided into two distinct questions: Question 1 (Quantitative/Measurement) and Question 2 (Qualitative/Observation). The golden rule here is simple:
