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Unformatted text preview: This document consists of 6 printed pages, 1 blank page and a Report Form. SP (NF/SLC) S41720/1 © CIE 2003 [Turn over CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level BIOLOGY 9700/03 Paper 3 Practical Test AS May/June 2003 1 hour 15 minutes Candidates answer on the Question Paper. Additional Materials: As listed in Instructions to Supervisors. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name in the spaces provided at the top of this page. Write in dark blue or black pen in the spaces provided on the Question Paper. You may use a soft pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, highlighters, glue or correction fluid. Answer all questions. The number of marks is given in brackets [ ] at the end of each question or part question. You are advised to spend 45 minutes on Question 1 and 30 minutes on Question 2. Centre Number Candidate Number Name For Examiner’s Use If you have been given a label, look at the details. If any details are incorrect or missing, please fill in your correct details in the space given at the top of this page. Stick your personal label here, if provided. 1 2 Total 2 9700/03/M/J/03 Question 1 [45 minutes] Enzymes in respiring yeast convert glucose to carbon dioxide and water. You are required to investigate the effects of temperature on these enzymes by measuring the rate of carbon dioxide production. You are provided with a suspension of yeast in water to which glucose has been added, labelled S1 . Prepare a water-bath by half-filling a 250 cm 3 beaker with water and maintain its temperature between 35 °C and 40 °C. Label two boiling tubes T1 and T2 respectively....
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