BI-185
Lock-and-key model
Biology · Secondary 3 · Medium · Lock-and-key model
A scientist suspects that a substance in apple slices is an enzyme that causes them to turn brown in air. Which test best shows that this substance is an enzyme?
- Compare browning of fresh and boiled apple slices when exposed to air.
- Store apple slices in the dark and see if they turn brown.
- Place apple slices in pure oxygen and observe browning.
- Dry the apple slices and see if they still turn brown in air.
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