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ANS P1 - SR13(IJ GCE Advanced Level and GCE Advanced...

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SR13(IJ) 1 GCE Advanced Level and GCE Advanced Subsidiary Level Paper 9700/01 Multiple Choice Question Number Key Question Number Key 1 B 21 A 2 A 22 B 3 C 23 C 4 C 24 C 5 B 25 D 6 C 26 D 7 C 27 B 8 A 28 D 9 C 29 D 10 D 30 C 11 C 31 D 12 A 32 D 13 B 33 D 14 B 34 A 15 A 35 A 16 B 36 A 17 A 37 A 18 C 38 C 19 D 39 B 20 B 40 A General comments Scores showed a satisfactory spread around the mean of 25.5 (63.75%), the standard deviation being 5.9. There was a good range of question facility. The easiest items, where 80% of candidates or more answered correctly were Questions 1 , 2 , 9 , 22 , 28 , 29 and 35 . The most difficult ones, answered correctly by 40% or fewer were Questions 10 , 13 , 24 , 33 and 34 . Comments on specific questions Question 4 While this presented no difficulty for the more able, option B was popular among weaker candidates. Question 6 Options C and D were the most popular but the choice of the correct one, C , depended on knowing whether endocytosis is an active or a passive process. Candidates were expected to approach this as a problem to be solved by considering, for instance, whether endocytosis is likely to be carried out by metabolically inactive cells. Many of the more able guessed that endocytosis is passive, so reducing the discrimination of the question.
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2 Question 10 Candidates found this to be a very difficult question. Weaker candidates, in particular, confused glycogen with glycerol and chose option A , while many of the more able chose option B . This indicates poor comprehension of the term ‘saturated’. Question 13 Candidates answered this question less well than expected. It was not anticipated that this question would be so difficult. The word ‘why’ may have led many candidates to look for a purpose rather than a cause. Question 14 Surprisingly many of the more able candidates chose option C . At X , product is being formed at a rapid rate, so it is unlikely that the number of enzyme-substrate complexes is low. Question 15 Weaker candidates were able to identify the correct answer almost as frequently as those who achieved a higher overall score, leading to low discrimination. Options C and D attracted too many of the better candidates. Question 22 The role of lignin in strengthening xylem vessels was very well known. Question 24 This was a test of the ability to interpret dissociation curves. Only candidates with the highest overall scores were able to do so. Most of the remainder guessed at the answer. Question 28 The function of goblet cells was very well known. Question 33 This question tested section J(e) of the syllabus. It proved difficult, requiring either specific knowledge, or the ability to evaluate the likelihood of the truth of each option. Question 34 This was another question which again, could be answered either by having specific knowledge, or by application of related knowledge. The popularity of option C shows that more candidates adopted the second approach and perhaps supposed that the treatment described was a form of gene therapy.
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