A-LevelBiologyBiological molecules9700/12 · May/June 2021 · Q61 Mark

A student carries out a semi-quantitative test with Benedict’s solution. Which statement about this procedure is correct?

AIt detects only the presence or absence of glucose.

BIt provides an indication of relative reducing sugar concentrations.

CThe precipitate needs to be filtered, dried and weighed to give the reducing sugar concentration.

Dcolorimeter needs to be used to determine the glucose concentration.

✓ Correct answer

B: It provides an indication of relative reducing sugar concentrations.

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Topic: Biological molecules, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, May/June 2021 Paper 1 Variant 2, question 6.

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