A-LevelBiologyBiological molecules9700/12 · May/June 2022 · Q61 Mark
Four extracts from different plant materials were made and tested with Benedict's solution. The extracts were boiled with Benedict's solution for 240 seconds and the final colour was recorded. extract colour produced after 240 seconds 1 red 2 yellow 3 blue 4 green Which sequence of plant extracts represents an increasing quantity of reducing sugar?
A1→2→4→3
B3→1→2→4
C3→2→1→4
D3→4→2→1
✓ Correct answer
D: 3→4→2→1
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