: Add equal volumes of sample and Benedict's solution; heat in a 95 raised to the composed with power C
"Why is your percentage change calculation negative?" A: "A negative percentage change indicates a decrease in mass/length due to water loss (osmosis) or respiration." biology 9700 practical notes
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. : Add equal volumes of sample and Benedict's
). A color change from blue to purple/lilac indicates protein. A-Level Notes 2. Laboratory Techniques : Used to create a range of concentrations. Simple Dilution Use clear, sharp, continuous lines
. If you need to make a 1% solution from a 10% stock, you use 1 part stock to 9 parts distilled water. Microscopy: