Biology 9700 Practical Notes [updated] Site

This report outlines the essential practical notes for Cambridge International AS & A Level Biology (9700), focusing on Paper 3 (Advanced Practical Skills) and Paper 5 (Planning, Analysis, and Evaluation) as detailed in resources like ZNotes and A-Level Notes. 1. Essential Experimental Skills (Paper 3)

: Used when you need specific concentrations at regular intervals (e.g., 2%, 4%, 6%). You calculate the volume of stock and distilled water for each. Serial Dilution biology 9700 practical notes

Practical 5: Investigation of the Effect of Osmosis on Plant Cells This report outlines the essential practical notes for

Biological Molecule Tests: Qualitative and semi-quantitative tests (e.g., Benedict’s for reducing sugars, Iodine for starch, Biuret for protein). Make sure to use the correct units when measuring (e

• Make sure to use the correct units when measuring (e.g., cm, mm, μm).
• Handle the microscope with care to avoid damage.

• Rules of the Game:

  : Add a few drops of iodine solution. A color change from brown/orange to blue-black indicates starch. Lipids (Emulsion Test)

• Student’s T-test: Comparing the means of two groups (e.g., Height of plants in sun vs. shade).

  A. Planning (The "Skeleton" Experiment)

  • What the notes cover: The "Method" structure: Apparatus, Variables, Safety, and Reliability.
  • Review: This is often the weakest area of student notes.