O-LevelBiologyEnzymes5090/12 · May/June 2016 · Q41 Mark

Amylase solution is tested with Benedict's solution, biuret solution and iodine solution. Which colours are obtained?

ABenedict's solution: blue, biuret solution: blue, iodine solution: blue-black

BBenedict's solution: blue, biuret solution: blue, iodine solution: brown

CBenedict's solution: blue, biuret solution: purple, iodine solution: brown

DBenedict's solution: red, biuret solution: purple, iodine solution: blue-black

✓ Correct answer

C: Benedict's solution: blue, biuret solution: purple, iodine solution: brown

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