It takes 5 minutes but prevents mistakes later.
Mix sample with ethanol, then add water. Positive result: Cloudy white emulsion. 📉 Core Skill 3: Data Presentation and Analysis biology 9700 practical notes
Join points with straight lines (ruled) unless a "best-fit" line is specifically requested. Circle outliers if they are clearly anomalous. ⚠️ Identifying Variables and Errors You will be asked to critique your experiment. Be specific. It takes 5 minutes but prevents mistakes later
Aim for 50 minutes per question. If a microscope slide is giving you trouble, move to the calculation/theory part of the question. 📉 Core Skill 3: Data Presentation and Analysis
Random: Difficulty in judging a color change (end-point). Use a colorimeter or a standard color chart to improve this. 💡 Quick Tips for Exam Day
The microscope is a staple of the 9700 syllabus. You must be comfortable with both low and high-power lenses. Always remember the formula: Plan Diagrams: Do not draw individual cells. Use clear, sharp, continuous lines.
on the X-axis; Dependent on the Y-axis. Use at least 50% of the grid provided.