Amylase and Starch Are Mixed and Placed at 0°C

question 9

Multiple Choice

Amylase and starch are mixed and placed at 0°C. After the IKI test, the solution turns black. A Benedict's test yields a negative result. Was starch digested? How do you know?

• A) No, the Benedict's test revealed no sugars in solution.
• B) Yes, the starch test indicated that no starch remained, and the Benedict's test revealed the presence of sugars in solution.
• C) Some was digested; the starch test showed some starch and the Benedict's test showed some sugars.

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