PLMGSS 2024 4E ScBio P1 QP

CANDIDATE NAME CLASS CLASS INDEX NUMBER CENTRE NUMBER INDEX NUMBER SCIENCE (BIOLOGY) 5088 / 01 Paper 1 Multiple Choice 1 August 2024 Additional Materials: Multiple Choice Answer Sheet Redox Reati 30 minutes READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name and index number on all the work you hand in. There are twenty multiple choice 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. 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 use of an approved scientific calculator is expected, where appropriate. This paper consists of 11 pages including this cover page Paya Lebar Methodist Girls’ School (Secondary) Preliminary Examination 2024 Secondary 4 Express / G3

2 [Turn over 1 The diagram shows a mesophyll cell. Which structure(s) are not found in animal cells? A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 5 2 The diagram shows some of the apparatus used in an osmosis investigation. In this investigation a dialysis tubing bag was filled with distilled water, sealed and weighed. The dialysis tubing bag was then immersed in concentrated sucrose solution for one hour. After one hour the dialysis tubing bag was removed from the beaker, the surface was dried and the bag was reweighed. Which row explains what will happen during the investigation? mass of the dialysis tubing bag at the end net movement of sucrose molecules net movement of water molecules A decreases none out of the bag B decreases none into the bag C increases into the bag into the bag D increases into the bag out of the bag dialysis tubing bag containing distilled water concentrated sucrose solution

3 [Turn over 3 Which of the statements about the movement of substances involve diffusion? 1 movement of carbon dioxide from body cells into the bloodstream 2 movement of glucose from the ileum into the bloodstream 3 movement of mineral ions into root hair cells in plants A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3 4 Large molecules are synthesised from smaller basic units. What is the basic unit of maltose? A amino acid B glycerol C glucose D starch 5 Which diagram of an enzyme, active site and substrate is correct? A B C D enzyme substrate active site substrate enzyme active site active site substrate enzyme active site enzyme substrate

4 [Turn over 6 W