2018 VJC H2 Biology Prelims Paper 1 Questions

VICTORIA JUNIOR COLLEGE JC 2 PRELIMINARY EXAMINATION 2018 NAME : ____________________________________ CT CLASS : ________ ____________________________ H2 BIOLOGY 9744/1 Paper 1 Multiple Choice 1 hour Additional material: Multiple choice answer sheet READ THESE INSTRUCTIONS FIRST Write your name, exam number on the answer sheet provided. Do not use any staples, paper clips, highlighters, glue or correction fluid. There are 30 questions in 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. Read the instructions on the answer sheet very carefully. 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 paper. The use of an approved scientific calculator is expected, where appropriate. This document consists of 17 printed pages, including cover page.

2 1 Which of the following is/are the most likely consequence(s) for an animal cell lacking functional Golgi bodies? 1. The cell dies because it is unable to ma ke glycoproteins to detect stimuli from its environment. 2. The cell dies from a lack of enzymes to digest food taken in by endocytosis. 3. The cell dies because of the accumulati on of worn-out organelles within itself. 4. The cell is unable to synthesis e centrioles for cell division. 5. The cell is unable to export it s enzymes or peptide hormones. A 1 and 5 only B 2, 3 and 4 only C All except 4 D All of the above 2 Which of the following options correctly matches the functional and structural features of cellulose, collagen, glycogen and triglycerides? Function Structure Linear/ Fibrous Molecule held together by hydrogen bonds Branched chains A Cellulose Support    Collagen Strengthening    B Cellulose Support    Triglyceride Storage    C Collagen Strengthening    Glycogen Storage    D Glycogen Storage    Triglyceride Storage   

3 3 Influenza virus has an enzyme called neuraminidase which breaks down glycoproteins in the membrane of the cell that the virus will infect. The glycoprotein binds to the active site of neuraminidase by induced fit. Which statements about the induced fit hypothesis of enzyme action are correct? 1. The active site must have a complem entary shape to the substrate for them to bind together. 2. This enzyme is less likely to be affe cted by non-competitive inhibitors than an enzyme working by the lock and key mechanism. 3. The substrate is converted to product by specific R-groups in the active site just like the lock and key mechanism. A 1 and 2 B 2 and 3 C 2 only D 3 only 4 An