IGCSE prescribed practical: investigate the effect of pH on enzyme activity using catalase and hydrogen peroxide. Measure oxygen production and analyse results.
Category: Practical Biology
IGCSE Practical: Investigating Osmosis in Plant Tissue
IGCSE prescribed practical: investigate osmosis in plant tissue using sucrose solutions. Measure mass change, calculate percentage change and analyse results.
Testing a Leaf for Starch: Photosynthesis Practical
Test a leaf for starch to demonstrate photosynthesis. Step-by-step destarching, iodine test method and results for IGCSE and IB biology practical work.
Winkler Method: Dissolved Oxygen and BOD Titration
Winkler method: redox titration to measure dissolved oxygen and calculate biological oxygen demand (BOD) in water. IB and A-level chemistry practical.
Dialysis vs Kidney Transplants: A Comparison
Research task comparing dialysis and kidney transplants as treatments for kidney failure. Covers advantages, disadvantages, success rates and ethical considerations.
IB Biology: Extract Your Own DNA from Cheek Cells
IB Biology students extract their own DNA from cheek cells using forensic science techniques. Hands-on practical demonstrating DNA collection, separation and purification.