HCI 2024 Prelim H2 Bio P1 Qn

© Hwa Chong Institution 2024 9744 H2 Biology / JC2 Preliminary Examinations / Paper 1 HWA CHONG INSTITUTION JC2 Preliminary Examinations Higher 2 CANDIDATE NAME CT GROUP 23S7___ CENTRE NUMBER INDEX NUMBER BIOLOGY Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet 9744/01 17 September 2024 1 hour INSTRUCTIONS TO CANDIDATES 1. Write your name, CT group, Centre number and index number in the spaces provided at the top of this cover page. 2. Fill in your particulars on the Multiple Choice Answer Sheet. Write your NRIC number and shade accordingly. 3. There are thirty questions on this paper. Answer all questions. For each question, there are four possible answers, A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. 4. At the end of the paper, you are to submit only the Answer Sheet. INFORMATION FOR CANDIDATES Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. The used of an approved scientific calculator is expected, where appropriate. This document consists of 22 printed pages.

2 © Hwa Chong Institution 2024 9744 H2 Biology / JC2 Preliminary Examinations / Paper 1 1 The following experiments were conducted by early scientists. Swan Neck Flask Experiment  Louis Pasteur boiled nutrient broth in a flask with a swan neck that allowed air in but prevented dust and microbes from reaching the broth.  The broth remained free of microbial growth until the neck was broken. Observation of Cork Cells  Robert Hooke used a microscope to examine thin slices of cork and observed tiny, box-like structures he called “cells”. Matthias Schleiden and Theodor Schwann's Observations  Schleiden and Schwann proposed that all living organisms are composed of cells, building on Hooke's earlier work. Which of the following statements are consistent with the given information about these experiments? 1 Louis Pasteur demonstrated that cells come from pre-existing cells by showing that microorganisms do not spontaneously generate but come from other microorganisms in the air. 2 Robert Hooke proved that cells are the smallest unit of life, as he observed tiny, box- like structures in cork, which are the fundamental units of its structure. 3 Matthias Schleiden and Theodor Schwann's observations led to the understanding that living organisms are composed of cells, supporting the principle that cells are the basic structural and functional units of life. A 1 only B 2 only C 1 and 2 only D 1, 2 and 3

3 © Hwa Chong Institution 2024 9744 H2 Biology / JC2 Preliminary Examinations / Paper 1 2 A researcher is studying the properties of a toxin produced by a plant. When cellular contents