Biology 9700 · AS & A Level · Testing for biological molecules

Testing for biological molecules — practice question

Biological molecule tests were performed on three solutions, and the outcomes were recorded as follows. solution 1: Benedict’s test - blue to orange solution 2: Benedict’s test after acid hydrolysis - blue to red solution 3: biuret test - blue to purple Which observations would identify the solutions that contained sucrose and amylase?

  • A1, 2 and 3
  • B1 and 3 only
  • C2 and 3 only
  • D2 only

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