RI 2023 Prelim H2 Bio P2 QP

© RI 2023 Preliminary Examination 9744/02 [Turn over RAFFLES INSTITUTION 2023 Year 6 Preliminary Examination Higher 2 BIOLOGY 9744/02 Paper 2 Structured Questions 21st September 2023 2 hours Candidates answer on Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your index number, CT group & name in the spaces at the top of this page. Write in a dark blue or black pen. You may use a HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Answer all questions in the spaces provided on the Question Paper. The use of an approved scientific calculator is expected, where appropriate. You may lose marks if you do not show your working or if you do not use appropriate units At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. This document consists of 27 printed pages and 1 blank page CIVICS GROUP CANDIDATE NAME INDEX NUMBER 3 S 0 3 2 For Examiner’s Use 1 / 10 2 / 12 3 / 9 4 / 11 5 / 10 6 / 11 7 / 10 8 / 13 9 / 8 10 / 6 Total / 100 Raffles Institution Internal Examination

2 © RI 2023 Preliminary Examination 9744/02 For Examiner’s Use [Turn over Section A Answer all the questions in this section. 1 Fig. 1.1 is a transmission electron micrograph of part of an animal cell. Fig. 1.1 (a) Name the structures A, B and C. A…………………………………………………………………………………………………………… B…………………………………………………………………………………………………………… C……………………………………………………………………………………………………...…[2] (b) Name one organelle that would also be present in a prokaryotic cell. …………………………………………………………………………………………………………..[1] B Golgi apparatus plasma membrane Golgi apparatus B A C nucleus

3 © RI 2023 Preliminary Examination 9744/02 [Turn over For Examiner’s Use (c) Describe the structure of B and its role. …………………………………………………………………………………………………………….. …………………………………………………………………………………………………………….. …………………………………………………………………………………………………………….. …………………………………………………………………………………………………………….. …………………………………………………………………………………………………………….. …………………………………………………………………………………………………………….. …………………………………………………………………………………………………………….. …………………………………………………………………………………………………………..[4] (d) Sodium ions cross cell surface membranes using facilitated diffusion or active transport. Explain why sodium ions cross cell surface membranes by these mechanisms and not by simple diffusion. ……………………………………………………………………