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CREST Awards
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Gold award: investigating vitamin supplements
In this project, students look at factors which affect the absorption of vitamins and minerals:
- They could use Visking tubing to model a cell membrane. The relative times taken for the vitamins and minerals to pass through this will be similar to the those it takes for the vitamins and minerals to get into the bloodstream
- Decide how they detect the vitamins and minerals when they pass through the tubing. For example, measuring the decrease in concentration on one side of the membrane or the increase in concentration on the other side
- Investigate the effect of (a) using whole tablets, or ones that have been powdered, (b) different temperatures, (c) stirring, (d) changing the pH of the solution
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