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Experiment No. 14
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Question:
Are cells in vegetables damaged when they’re cooked? |
Experiments: To examine osmosis across the cell membrane.
Materials:
Method:You will need:
Salt, water,
petri dishes,
1 cooked potato,
1 raw potato.
1. Make a small hollow
in each piece of potato.
2. Place salt in the hollowed out potatoes.
3. Place the potato pieces into the petri dishes hollow side up.
4. Place water around each potato in each petri dish.
Result:
The salt dissolved in the
raw potato, but did not dissolve in the cooked potato.
Conclusion:
Water passed from the petri dishes through the healthy cell walls of the raw potato. It didn’t pass through the cell walls of the cooked potato because its walls were damaged during cooking.
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Find
out more! |
The cell membrane performs a vital function allowing water to pass through it (osmosis).
Sixth Class Experiments
1.
Can
Water Move up a Flower?
2. How
can you show that water moves through the branch of a tree and its leaves?
3. How can you see the roots of a plant grow if they're underground?
4. Can a plant beat an obstacle course and grow towards what it needs?
5. Can you grow your own mould?
7. What causes us to feel breathless?
8. Can you prove that humans breathe out CO2?
11. What happens when Yeast has sugar to feed on?
13. How does the selective barrier in a cell work?
14. Are cells in vegetables damaged when they're cooked?
15. How hard does the heart work?
16. How can you see your pulse?
17. How can you discover if food contains starch?
18. How can you discover if food contains protein?