2024 RI H2 Bio P3 MS

© RI 2024 Preliminary Examination 9744/03 [Turn over RAFFLES INSTITUTION 2024 Year 6 Preliminary Examination Higher 2 BIOLOGY 9744/03 Paper 3 Long Structured and Free-response Questions 11 Sept 2024 2 hours Candidates answer on the Question Paper. Additional Materials: Writing paper. R E A D T H E S E I N S T R U C T I O N S F I R S T Write your index number, CT group & name in the spaces at the top of this page. Write in 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. Section A Answer all questions in the spaces provided on the Question Paper. Section B Answer any one question in the writing paper provided. 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, hand in your essay question SEPARATELY. The number of marks is given in brackets [ ] at the end of each question or part question. This document consists of 19 printed pages. CIVICS GROUP CANDIDATE NAME INDEX NUMBER 4 S 0 3 2 Raffles Institution Internal Examination For Examiner’s Use Section A 1 / 30 2 / 11 3 / 9 Section B 4 or 5 / 25 Total / 75

2 © RI 2024 Preliminary Examination 9744/0 3 For Examiner’s Use Section A Answer all the questions in this section. 1 The human papillomavirus (HPV) is sexually transmitted and can cause the development of cervical intraepithelial neoplasia (CIN). Patients with CIN are o b s e r v e d t o h a v e a b n o r m a l growth of cells that line the cervix. This can lead to the development of cervical cancer. Fig. 1.1 shows the structure of the HPV. Fig. 1.1 (a) With reference to Fig. 1.1, compare the structure of HPV with a T4 bacteriophage. .……………………………………………………...…………………………………………………… .……………………………………………………...…………………………………………………… ………………………………………………………...…………………………………………………. …………………………………………………………...………………………………………………. .………………………………………………………..………………………………………………… ………………………………………………………..………………………………………………[3] Similarities 1. The genome of both viruses are enclosed by a protein capsid*; OR Both viruses have a capsid* which is made up of several individual protein subunits (capsomeres); 2. Both viral genomes are made up of DNA*; Differences capsid protein L1 histone capsid protein L2 genomic DNA

3 © RI 2024 Preliminary Examination 9744/0 3 [Turn over For Examiner’s Use 3. The HPV has DNA associated with