GMSS 2018 Bio Prelim P1 QP

___________________________________________________________ BIOLOGY Paper 1 6093/01 Sec 4 Express Additional materials:Optical Answer Sheet 1 hour Setter:Mrs Cheryl Tang 20 Aug 2018 READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, papers clips, highlighters, glue or correction fluid on the Optical Answer Sheet. Write your name, class and index number on the Optical Answer Sheet provided. There are fortyquestions on this paper. Answer allquestions. For each question, there are four possible answers, A, B, C andD. Choose the one you consider correct and record your choice in soft pencilon 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. This document consists of 22printed pages. [Turn over Geylang Methodist School (Secondary) Preliminary Examination 2018 www.KiasuExamPaper.com 276

2 GMS(S)/BiologyP1/Prelim2018/4E 1 The diagram below shows a plant cell in a leaf of a tree. Which of the following correctly shows the pathway involving the synthesis of a protein molecule needed for the development of a fruit? A 1Æ2Æ5Æ4 B 1Æ6Æ5Æ9 C 2Æ5Æ7Æ1 D 7Æ1Æ2Æ5 2 The diagram shows blood passing through an arteriole into a capillary. Part of the capillary wall has been cut away to show the blood. What is the level of organisation of the structures labelled P and Q? P Q A organ cell B organ tissue C tissue cell D tissue tissue 1 2 3 4 5 6 7 8 9 www.KiasuExamPaper.com 277

3 GMS(S)/BiologyP1/Prelim2018/4E 3 Strips of plant tissue were immersed in a range of sucrose solutions of different concentrations. Their lengths were measured before immersion and after 30 minutes in the different solutions. The graph shows the ratio of their initial length to final length. Which concentration of sucrose solution, in mol dm-3, has the same water potential as the cell sap before immersion? A 0.10 B 0.25 C 0.45 D 0.80 4 Where and how does carbon dioxide enter a plant? where how A B C D root hair cells root hair cells stomata stomata active uptake diffusion active uptake diffusion www.KiasuExamPaper.com 278

4 GMS(S)/BiologyP1/Prelim2018/4E 5 The diagram shows a biological molecule. What type of molecule is this likely to be? A fat B glycogen C protein D sucrose 6 A mixture of food gives the following results on testing: a purple colour in the biuret test; a blue colour when heated with Benedict's solution; a yellow colour with iodine; a white emulsion with ethanol. What does the mixture contain? A fat and protein B protein and reducing sugar C reducing sugar and starch D starch and fat 7 Protease enzyme breaks down protein to amino acids. In the ‘lock and key’ hypothesis, what is the lock and what is the key? lock key A B C D amino acid protease protease protein protease amino acid protein protease www.KiasuExamPaper.com 279

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