A-LevelBiologyBiological molecules9700/12 · Feb/Mar 2019 · Q71 Mark
Four solutions were tested with Benedict's solution. The table shows the colour of the solutions after testing. [Table with solution number and colour: 1 green, 2 blue, 3 brick red, 4 yellow] Which row shows solutions that could have given these results?
Asolution 1: 0.05% reducing sugar, solution 2: 0.5% non-reducing sugar, solution 3: 1.0% reducing sugar, solution 4: 0.1% reducing sugar
Bsolution 1: 0.5% reducing sugar, solution 2: 0.0% reducing sugar, solution 3: 1.0% reducing sugar, solution 4: 0.1% reducing sugar
Csolution 1: 1.0% reducing sugar, solution 2: 1.0% non-reducing sugar, solution 3: 1.5% reducing sugar, solution 4: 0.5% reducing sugar
Dsolution 1: 0.05% non-reducing sugar, solution 2: 0.5% reducing sugar, solution 3: 1.0% non-reducing sugar, solution 4: 0.1% non-reducing sugar
✓ Correct answer
A: solution 1: 0.05% reducing sugar, solution 2: 0.5% non-reducing sugar, solution 3: 1.0% reducing sugar, solution 4: 0.1% reducing sugar
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