A-LevelBiologyBiological moleculesFeb/Mar 2022Paper 1 Q111 Mark
The statements describe the structure of a polysaccharide found in the cell walls of certain plants. 1 The polysaccharide is composed of two different monosaccharides. 2 The monosaccharides are joined by 1,4 glycosidic bonds. 3 The polysaccharide contains pentose sugars. Which statements are also true for cellulose?
A1 and 2
B1 and 3
C2 and 3
D2 only
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The correct answer is D. This question tests the candidate's understanding of biological molecules within the Biologysyllabus. The examiner's mark scheme requires...
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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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