A-Level Biology OCR A
Temperature Beetroot Water Pieces Colorimeter Effect Permeability Cell
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Describe a method using a colorimeter to investgate the effect of temperature on permeability of cell membranes. |
Back |
Investigating effect of temperature on permeability of cell membranes:- Cut five small pieces of beetroot of equal size
- Wash beetroot pieces then place in 100ml distilled water in a water bath
- Increase temperature of water bath in 10*C intervals
- Take samples of water containing beetroot five mins after each temperature was reached
- Measure absorbance of each sample using a colorimeter with a blue filter
- Repeat experiment three times, each time with fresh beetroot pieces and calculate mean absorbance for each temperature
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A-Level Biology OCR A