A-Level BiologyYear 2021Q3
6 3 Monosaccharides join to form disaccharides and polysaccharides. (a) (i) State the type of reaction where two monosaccharides join to form a disaccharide molecule. (1) ..................................................................................................................................................................................................................................................................................... (ii) Which of the following bonds joins two monosaccharides to form a disaccharide molecule? (1) A ester B glycosidic C hydrogen D peptide (b) The diagram shows a molecule of sucrose. CH2OH OH OH OH H H H O H H OH O CH2OH H CH2OH H OH H O (i) Draw the two monosaccharides that are produced when a molecule of sucrose is broken down. (2) Turn over 7 (ii) Name the two monosaccharides that are produced when sucrose is broken down. (1) 1.................................................................................................................................................................................................................................................................................. 2.................................................................................................................................................................................................................................................................................. (c) Compare and contrast the structure of a disaccharide with glycogen. (4) ..................................................................................................................................................................................................................................................................................... ..................................................................................................................................................................................................................................................................................... ..................................................................................................................................................................................................................................................................................... ..................................................................................................................................................................................................................................................................................... ..................................................................................................................................................................................................................................................................................... ..................................................................................................................................................................................................................................................................................... ..................................................................................................................................................................................................................................................................................... ..................................................................................................................................................................................................................................................................................... ..................................................................................................................................................................................................................................................................................... ..................................................................................................................................................................................................................................................................................... ..................................................................................................................................................................................................................................................................................... (Total for Question 3 = 9 marks)
Paper Source:8BN0_01_que_20211012.pdf
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Exam Specification Info
This question is part of the UK A-Level Biology syllabus. In the actual exam, structured questions typically require linking specific keywords to gain full marks. Applaa helps you drill these topics.
Syllabus levelAdvanced Level (A-Level)
SubjectBiology
Official MarksVariable (2–6 marks)