A-LevelBiologyBiological moleculesOct/Nov 2021Paper 1 Q71 Mark
A student carried out four tests on a sample of biological molecules. [Table showing test and observation: emulsion cloudy, Benedict's yellow, biuret purple, iodine yellow] Which conclusions made by the student are correct? 1 Fat was present. 2 Glucose was present. 3 Protein was present. 4 Starch was not present.
A1, 2, 3 and 4
B1, 2 and 4 only
C1, 3 and 4 only
D2 and 3 only
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of biological molecules within the Biologysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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