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

Testing for biological molecules — practice question

A student performed four tests to identify biological molecules. The results are listed below. Tests and observations: - iodine: orange - biuret: purple - Benedict’s: orange - emulsion: clear Which molecules are present in the solution?

  • A1 and 2
  • B1 and 3
  • C2 and 3
  • D3 and 4

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