ACSI P2 - Y4 Exp Bio Prelim 2024

[Turn Over CANDIDATE NAME CENTRE NUMBER S 2 0 3 1 INDEX NUMBER BIOLOGY 6093/02 Paper 2 Candidates answer on the Question Paper No Additional Materials are required. 12 August 2024, Monday 1 hour 45 minutes READ THESE INSTRUCTIONS FIRST Write your name and index number on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Section A Answer all questions. Write your answers in the spaces provided on the Question Paper. Section B Answer only ONE question in this section. Write your answers in the spaces provided on the Question Paper. The use of an approved scientific calculator is expected, where appropriate. The number of marks is given in brackets [ ] at the end of each question or part question. This document consists of 21 printed pages, including this cover page. For Examiner’s Use Section A Section B Total / 80 Anglo-Chinese School (Independent) PRELIMINARY EXAMINATION YEAR FOUR EXPRESS

2 6093/02/Y4Exp/Prelim/Aug2024 Section A Answer all questions. Write your answers in the spaces provided. 1 Fig. 1.1 shows blood pressure changes as blood flows through part of the circulatory system, beginning at the right atrium, travelling to the lungs, and ending in the pulmonary vein. Fig. 1.1 (a) Identify the chamber of the heart represented by C. Chamber C ………………………………………………………………………………………[1] (b) Explain the reasons for the regular changes in blood pressure in region D. ……...………………………………………………………………………………….……………… ……...………………………………………………………………………………….……………… ……...………………………………………………………………………………….……………… ……...………………………………………………………………………………….……………… ............................................................................................................................................[2]

3 6093/02/Y4Exp/Prelim/Aug2024 [Turn Over (c) Important exchange of substances take place in the blood as it passes through region E. (i) Identify organ E. ............................................................................................................................................[1] (ii) Identify and describe the exchange of substances that take place. ……...………………………………………………………………………………….……………… ……...………………………………………………………………………………….……………… ……...………………………………………………………………………………….……………… ............................................................................................................................................[2] (ii) State two features of organ E and explain how they help to improve the efficiency of the rate for exchange of substances. Feature 1 ……………………………………………………………………………………………. Explanation …………….…………………………………………………………….……………… ……...………………………………………………………………………………….……………… ……...………………………………………………………………………………….……………… Feature