Notes | Biology 9700 Practical

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

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

How you record your findings is just as important as the experiment itself. 📝 Tables Draw your table you start the experiment. The independent variable goes in the left column . Include headings with units (e.g., ). Do not put units in the body cells. Ensure all readings have the same number of decimal places. 📊 Graphs biology 9700 practical notes

Aim for 50 minutes per question. If a microscope slide is giving you trouble, move to the calculation/theory part of the question.

You must know the reagents and the specific color changes for biological molecules. 🍱 The Big Four Tests Draw only the tissue layers (e

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

Heat with Benedict's solution. Color change: Blue → Green → Yellow → Orange → Brick red precipitate. Non-Reducing Sugars: Heat with HCl first, neutralize with NaHCO3cap N a cap H cap C cap O sub 3 , then perform the Benedict's test. Ensure units are converted to micrometers ( )

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.