BI-142
Lock-and-key model
Biology · Secondary 3 · Medium · Lock-and-key model
A piece of liver is added to hydrogen peroxide solution. Bubbles of oxygen are produced. The experiment is repeated with the liver boiled before adding it to the hydrogen peroxide.
What will be observed in the second experiment?
What will be observed in the second experiment?
- More bubbles are produced than before
- Bubbles are produced at the same rate as before
- Very few or no bubbles are produced
- The solution changes colour but no bubbles form
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