Biology 9700 Practical Notes [best]

: What you change (e.g., concentration). Ensure you decide on a suitable range and interval. Dependent Variable : What you measure (e.g., time for color change). Control Variables

Things you must keep constant (e.g., temperature using a water bath, volume of reagents). Use the word "volume" or "concentration" specifically—never just say "amount." 4. Precision and Data Presentation biology 9700 practical notes

: Qualitative and semi-quantitative tests (e.g., Benedict’s for reducing sugars, Iodine for starch, Biuret for protein). : What you change (e

Always start on the lowest power objective. When calculating actual size, use the formula: Actual Size = Image Size / Magnification 2. Data Presentation (The Tables) : What you change (e.g.