Biology 9700 Practical Notes [exclusive] May 2026

What you keep the same (e.g., temperature, pH). Experimental Errors: Systematic: Faulty equipment (e.g., a thermometer that is 2∘2 raised to the composed with power

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.

You must know the reagents and the specific color changes for biological molecules. 🍱 The Big Four Tests biology 9700 practical notes

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

Add Biuret reagent. Positive result: Blue → Purple/Violet. What you keep the same (e

on the X-axis; Dependent on the Y-axis. Use at least 50% of the grid provided.

Draw only the tissue layers (e.g., epidermis, xylem, phloem). No shading or sketching allowed. . Ensure units are converted to micrometers ( ) before calculating. 🧪 Core Skill 2: Biochemical Testing Always remember the formula: Plan Diagrams: Do not

What you change (e.g., concentration). Dependent Variable: What you measure (e.g., volume of gas).

Mix sample with ethanol, then add water. Positive result: Cloudy white emulsion. 📉 Core Skill 3: Data Presentation and Analysis