2014 HCI H1 Biology Prelims P2 Questions

This document consists of 11 printed pages and 1 blank page. HWA CHONG INSTITUTION JC2 Preliminary Examinations Higher 1 CANDIDATE NAME CT GROUP 13S____ CENTRE NUMBER INDEX NUMBER BIOLOGY Paper 2 8875/02 2 September 2014 2 hours INSTRUCTIONS TO CANDIDATES Write your name, CT group, centre number and index number in the spaces provided at the top of this cover page. SECTION A This section contains four questions. Answer ALL questions. Write your answers on the lines / in the spaces provided. SECTION B This section contains two questions. Answer any ONE question. Your answers must be in continuous prose, where appropriate. Write your answers on the writing paper provided. Begin each part on a fresh sheet of writing paper. A NIL RETURN is required. INFORMATION FOR CANDIDATES The number of marks is given in brackets [ ] at the end of each question or question part. You may use a calculator. You are reminded of the need for good English and clear presentation in your answers. For Examiners' Use 1 / 10 2 / 10 3 / 10 4 / 10 5 / 6 / 20 Total / 60

© Hwa Chong Institution 2014 8875 H1 Biology / Preliminary Examinations / Paper 2 2 --- BLANK PAGE --- 1

© Hwa Chong Institution 2014 8875 H1 Biology / Preliminary Examinations / Paper 2 2 SECTION A: STRUCTURED QUESTIONS QUESTION 1 Fig. 1.1 shows the electron micrograph of part of a plasma cell with organelles A, B and C labelled. Plasma cells secrete proteins that are involved in immune responses. Fig. 1.1 (a) (i) Name and state the function of organelles A and B. [2] (ii) Explain why there is an abundance of organelle C in the plasma cell. [2] A B C cell membrane

© Hwa Chong Institution 2014 8875 H1 Biology / Preliminary Examinations / Paper 2 3 (b) Explain how the structure of the cell membrane relates to its role in maintaining the internal environment of the plasma cell. [3] Macrophages are another important cell type in the immune system where one of their functions is to remove cellular debris. (c) Describe how macrophages engulf and digest cellular debris. [3] [Total: 10]

© Hwa Chong Institution 2014 8875 H1 Biology / Preliminary Examinations / Paper 2 4 QUESTION 2 Fig. 2.1 outlines the processes in photosynthesi