9700_w02_er - SR13IN0201 FOREWORD 1 BIOLOGY 2 GCE Advanced...

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SR13IN0201 1 FOREWORD ....................................................................................................................... 1 BIOLOGY ............................................................................................................................ 2 GCE Advanced Level and GCE Advanced Subsidiary Level ...................................................................... 2 Paper 9700/01 Multiple Choice ..................................................................................................................... 2 Paper 9700/02 Paper 2 ................................................................................................................................. 3 Paper 9700/03 Practical 1 ............................................................................................................................. 7 Paper 9700/04 Paper 4 ................................................................................................................................. 8 Paper 9700/05 Practical 2 ........................................................................................................................... 10 Paper 9700/06 Options ............................................................................................................................... 11 Paper 9700/08 Practical 3 (Mauritius Only) ................................................................................................. 16 This booklet contains reports written by Examiners on the work of candidates in certain papers. Its contents are primarily for the information of the subject teachers concerned .
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2 GCE Advanced Level and GCE Advanced Subsidiary Level Paper 9700/01 Multiple Choice Question Number Key Question Number Key 1 B 21 B 2 B 22 D 3 B 23 D 4 C 24 D 5 B 25 D 6 B 26 A 7 C 27 B 8 C 28 B 9 B 29 D 10 B 30 B 11 A 31 B 12 C 32 A 13 D 33 A 14 B 34 C 15 C 35 D 16 D 36 D 17 A 37 D 18 D 38 C 19 C 39 A 20 A 40 A General comments Scores showed a very good spread around the mean of 27.1 (67.8%), the standard deviation being 6.1. Eleven items were answered correctly by 80% or more of candidates, Questions 2 , 4 , 6 , 10 , 11 , 17 , 18 , 22 , 25 , 33 , and 39 . The most difficult ones, answered correctly by 40% or fewer were Questions 8 , 26 , 34 , and 35 . Comments on specific questions Question 5 The relative difficulty of this item reveals a poor understanding of the function of mitochondria. It was not surprising that option A was popular as only this option mentioned energy. Option C attracted a high proportion of weaker candidates, indicating their confusion between respiration and gas exchange.
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3 Question 8 This was a difficult item even for the most able. Option D was far more popular than the correct option, C , because candidates did not take into account the loss of water molecules in the condensation reactions during polymerisation. Question 19 Weaker candidates had little idea of the answer, while the more able found this an easy item, making it a very good discriminator. Question 24 The high discrimination was due to the large proportion of weaker candidates who thought that the diagram represented sieve tubes in phloem. Better candidates had little difficulty in making the correct identification. Question 26 This was a difficult item for all levels of ability. It appears that candidates knew the effects of carbon dioxide concentration and the frequency of impulses in the vagus nerve, but few were aware of the role of pressure receptors in the aorta. Question 30 Weaker candidates had little idea of how to tackle this problem, while it was not difficult for the more able. Question 34 More candidates chose option A than chose the correct option, C . This was true even of the most able. Many candidates probably failed to take notice of the word ‘least’ in the question. Malaria is not passed directly from parent to child because it requires an intermediate host. Question 35 This item reveals a poor understanding of the biology of the infectious agents responsible for diseases mentioned in section K of the syllabus. It is evidently not generally appreciated that viruses, prokaryotic cells and eukaryotic cells all contain genes, and that viruses are not cells.
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