Biology 5090 · O Level · Biological molecules

Biological molecules — practice question

Amylase solution is tested using Benedict’s solution, biuret solution and iodine solution. What colours are produced?

  • 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

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