SJI_2020 Y3 EOY Biology 6093 P1

[Turn over] ST JOSEPH’S INSTITUTION END-OF-YEAR EXAMINATION 2020 (YEAR 3) CANDIDATE NAME CLASS INDEX NUMBER BIOLOGY Paper 1 Additional Materials : Multiple Choice Answer Sheet 6093/01 7 October 2020 45 minutes (09:45 – 10:30) READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class and index number on the Answer Sheet in the spaces provided. 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. 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 booklet. The use of approved scientific calculator is expected, where appropriate. At the end of the exam paper, hand in yo ur Question Paper and Multiple Choice Answer Sheet separately. This document consists of 17 printed pages including this cover page. For Examiner’s Use Total / 30

2 [Turn over] 1 Which substance(s) is / are not produced at the ribosomes? 1 amino acids 2 amylase 3 glycerol A 3 only B 1 and 2 C 1 and 3 D 2 and 3 2 The diagram below shows four different cells. Which cells are adapted to increase surface-area-to-volume ratio? A 1 and 2 B 1 and 4 C 2 and 4 D 3 and 4 3 The diagram shows molecules of glucose and water in a solution inside a petri dish . Glucose was added to water at Z. Which of the following takes place after the addition of glucose at Z? A active transport only B diffusion only C osmosis only D diffusion and osmosis

3 [Turn over] 4 The diagram shows a permeable tubing filled with salt solution in a test-tube of water. Which graph shows the changes in salt concentration inside and outside of the tubing after 24 hours?

4 [Turn over] 5 The table shows the results of an analysis of the cell sap from a marine plant, Valonia utricularis, and the surrounding sea water. substance analyzed ionic concentration (mg/l) sodium chloride potassium cell sap 0.11 0.62 0.50 sea water 0.49 0.58 0.01 The data suggests that the marine plant 1 removes sodium ions by active transport. 2 removes chloride ions by diffusion. 3 accumulates sodium ions by active transport. 4 accumulates potassium ions by active transport. Which of the above statements are correct? A 1, 2 and 3 only B 1, 2 and 4 only C 1, 3 and 4 only D 2, 3 and 4 only 6 The diagram shows macromolecules P, Q and R. Which of the following statements is true?