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

Testing for biological molecules — practice question

A student performed a set of tests on an extract from a plant. The table displays the results of these tests. Which row indicates the molecules present in the plant extract?

  • Aprotein present, fatty acids present, reducing sugar present
  • Bprotein absent, fatty acids present, reducing sugar present
  • Cprotein absent, fatty acids present, reducing sugar absent
  • Dprotein absent, fatty acids absent, reducing sugar present

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