BI-676
Digestive enzymes
Biology · Secondary 3 · Hard · Digestive enzymes
A student adds an unknown enzyme to a protein solution and keeps it at pH 2 and 37 °C. After 15 minutes, biuret test on the mixture gives a pale violet colour instead of deep violet. What does this suggest about the enzyme?
- It is a carbohydrase that digests starch.
- It is a protease that digests protein in acidic conditions.
- It is denatured at pH 2 and inactive.
- It is a lipase that digests fats only at pH 7.
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