A student carried out four tests for biological molecules. The observations are shown in the table. [Table with columns 'test' and 'observations' and rows iodine: orange, biuret: purple, Benedict's: orange, emulsion: clear] The diagrams show molecules or parts of molecules. [Diagrams of four molecules labelled 1, 2, 3, 4] Which pair is present in the solution?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
✓ Correct answer
B: 1 and 3
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