QUES P2 - This question paper consists of 11 printed pages...

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Unformatted text preview: This question paper consists of 11 printed pages and 1 blank page. SP (NF/SLC) S23738/2 © CIE 2002 [Turn over CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level BIOLOGY 9700/2 PAPER 2 Structured Questions AS Core MAY/JUNE SESSION 2002 1 hour Candidates answer on the question paper. No additional materials are required. TIME 1 hour INSTRUCTIONS TO CANDIDATES Write your name, Centre number and candidate number in the spaces at the top of this page. Answer all questions. Write your answers in the spaces provided on the question paper. All working for numerical answers must be shown. INFORMATION FOR CANDIDATES The intended number of marks is given in brackets [ ] at the end of each question or part question. Candidate Centre Number Number Candidate Name FOR EXAMINER’S USE 1 2 3 4 5 6 TOTAL 2 9700/2/M/J/02 Answer all the questions. Write your answers in the spaces provided. 1 Fig. 1.1 shows the life cycle of a species of brown seaweed. Fig. 1.1 (a) Indicate on Fig. 1.1, with the letter M , one stage where mitosis occurs. [1] (b) DNA replication occurs in cells during interphase before they divide by mitosis. Explain why it is important that replication occurs before mitosis. .......................................................................................................................................... .......................................................................................................................................... .......................................................................................................................................... ......................................................................................................................................[2] (c) Explain why DNA replication is described as semi-conservative . .......................................................................................................................................... .......................................................................................................................................... ......................................................................................................................................[2] adult seaweed young seaweed zygote male gametes female gametes meiosis For Examiner’s Use 3 9700/2/M/J/02 [Turn over (d) Explain why meiosis occurs in the life cycle of this seaweed. .......................................................................................................................................... .............................................................................................................................................
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This note was uploaded on 01/25/2012 for the course BIO alevels taught by Professor J.b during the Spring '11 term at Taylor's.

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QUES P2 - This question paper consists of 11 printed pages...

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