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

Testing for biological molecules — practice question

The table gives the outcomes of tests done on a sample of biological molecules. Which row shows the kinds of molecules present in the sample?

  • Aprotein: present; reducing sugar: absent; starch: absent
  • Bprotein: absent; reducing sugar: present; starch: absent
  • Cprotein: present; reducing sugar: absent; starch: present
  • Dprotein: absent; reducing sugar: present; starch: present

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