BI-635
Digestive enzymes
Biology · Secondary 3 · Hard · Digestive enzymes
In an experiment, a Visking tubing bag containing starch and amylase is placed in a beaker of water at 37°C. After 20 minutes, the water outside the bag gives a positive test with Benedict’s solution. What does this show?
- Starch molecules diffused out of the bag.
- Amylase diffused out and reacted with water.
- Reducing sugars were produced and diffused out of the bag.
- Water entered the bag by osmosis and formed sugar.
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