BI-667
Digestive enzymes
Biology · Secondary 3 · Medium · Digestive enzymes
Lipase breaks down fats into fatty acids and glycerol. A teacher adds lipase and fat to a beaker containing a pH indicator that is purple at pH 8 and turns yellow at pH 4. Which observation shows that lipase is working fastest?
- The indicator stays purple for 20 minutes
- The indicator changes from purple to yellow in 2 minutes
- The indicator slowly becomes colourless after 30 minutes
- The indicator turns blue after 5 minutes
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