YCKSS Pure Biology Prelim 2024 Paper 1

Name: Index Number: Class: YIO CHU KANG SECONDARY SCHOOL PRELIMINARY EXAMINATION 2024 SECONDARY FOUR EXPRESS BIOLOGY 6093/01 Paper 1 1 hour Additional Materials: 9 September 2024 (Monday) Optical Answer Sheet (OAS) READ THESE INSTRUCTIONS FIRST Write in soft pencil on the OAS. Do not use staples, paper clips, glue or correction fluid. Write your name, index number and class on the OAS in the spaces provided. There are forty 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 OAS. Read the instructions on the OAS 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. For Examiner’s Use 40 Setter: Mr Wong Mingwei This document consists of 20 printed pages.

2 4E PRELIMINARY EXAM 2024 6093/01 1 The electron micrograph shows some cells from a plant. Which cell structure is not usually found in cells from a root? 2 The diagram shows three circles, 1, 3 and 5, and the shared structures, 2 and 4. Which row correctly identifies the three circles and some of the structures that are shared between them? circle 1 2 circle 3 4 circle 5 A muscle cell no nucleus red blood cell mitochondria xylem vessel B muscle cell cytoplasm xylem vessel cell membrane red blood cell C red blood cell cell membrane muscle cell chloroplast xylem vessel D xylem vessel no nucleus red blood cell cell membrane muscle cell 3 What happens to the surface area to volume ratio of a cube when the length of each side is doubled? A The ratio decreases by four times. B The ratio halves. C The ratio doubles. D The ratio increases by four times. A B C D circle 1 circle 3 2 circle 5 2 4

3 4E PRELIMINARY EXAM 2024 6093/01 4 Which row identifies how ions and molecules move by active transport? against concentration gradient down concentration gradient through a membrane requiring energy A ✓  ✓ ✓ B ✓  ✓  C  ✓   D  ✓ ✓ ✓ 5 Some health problems can be detected using chemical tests for protein and glucose in the urine. Which row shows the results for a person with protein and glucose in their urine? Benedict’s solution biuret reagent ethanol iodine solution A blue blue white emulsion brown B blue violet colourless blue-black C red blue white emulsion blue-black D red violet colourless brown 6 Which region on the graph shows the activation energy of a