1. Digital microscopes – investigating plasmolysis in red onion cells

2. This practical work should: Support deeper pupil understanding of
Support deeper pupil understanding of
Cellular basis of living organisms
Structure of plant cells
Osmosis
Generate data to allow pupils to explain plasmolysis
Allow exploration of planning and experimental design
Develop numeracy skills

3. Investigating plasmolysis in red onion cells
National 4 & 5
Investigating plasmolysis in red onion cells   
Slide and coverslip
Blu-tack
Scalpel
Pointed forceps
Rock salt crystals   
Distilled water
1cm3 pipettes
Red onion
Veho digital microscope/magnifier

4. Start microscope Connect microscope to PC USB port  
Connect microscope to PC USB port
Click icon on desktop
Choose area
Focus the microscope

23. Investigate examples of osmosis…..
Water balance in animals and plants
Foods
Desalination - drinking water from salt water (reverse osmosis)