2024 ACJC H2 Bio P1 QP

This document consists of 20 printed pages. Anglo-Chinese Junior College JC2 Biology Preliminary Examination Higher 2 BIOLOGY Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet 9744/01 10 September 2024 1 hour READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your Name and Index number in the Answer Sheet provided. There are thirty questions in this section. 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 Question Paper. The use of an approved scientific calculator is expected, where appropriate.

2 Anglo-Chinese Junior College 2024 J2 H2 9744 Paper 1 Preliminary Examination 1 Which statement is correct according to the principles of cell theory? A All organisms originate from a single cell. B Cells can carry out all necessary life processes independently. C Cells are the fundamental units of structure and function in all living organisms. D Multicellular organisms have cells that perform specialised functions. 2 Active transport is one of the key processes that occurs across the cell surface membrane. Without it, many other processes within the organism cannot occur. Which statements accurately describe the features of active tra nsport across a cell surface membrane? 1 It can move substances against th eir concentration gradients. 2 It relies solely on the diffusion process without any energy expenditure. 3 It involves the hydrolysis of ATP for energy. 4 It only occurs when the external concentration of the substan ce is higher than its internal concentration. A 1, 2 and 3 B 1 and 3 only C 2 and 4 only D 3 and 4 only 3 Which statement can explain how viruses challenge the concepts of what is considered living? A They are much smaller than most cells. B They can reproduce when they infect host cells. C They have enzymes which are not active outside a host cell. D They have their own genetic material which codes for viral proteins.

3 [Turn over Anglo-Chinese Junior College 2024 J2 H2 9744 Paper 1 Preliminary Examination 4 The diagram represents the structure of the human immunodeficiency virus (HIV). Which statements are correct for components V, W, X, Y and Z in HIV? 1 V, W, X and Z are only made o f amino acids while Y is made of ribonucleotides. 2 V and X are prevented from undergoing 3D conformational chang e when an inhibitor binds to CD4 receptor on host cell. 3 W prote