This preview shows pages 1–3. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: This question paper consists of 5 printed pages, 2 blank pages and a Report Form. SP (SM) S24283/3 © CIE 2002 [Turn over CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level BIOLOGY 9700/3 PAPER 3 Practical Test OCTOBER/NOVEMBER SESSION 2002 1 hour 15 minutes Candidates answer on the question paper. Additional materials: As listed in Instructions to Supervisors TIME 1 hour 15 minutes INSTRUCTIONS TO CANDIDATES Write your name, Centre number and candidate number in the spaces at the top of this page. Answer all parts of the question. Write your answers in the spaces provided on the question paper. INFORMATION FOR CANDIDATES The intended number of marks is given in brackets [ ] at the end of each question or part question. Candidate Centre Number Number Candidate Name FOR EXAMINER’S USE TOTAL 2 9700/3/O/N/02 1 You are provided with 10 sticks of potato tissue that have been placed either in distilled water or in one of four concentrations of sucrose solution overnight. You are required to determine the water potential of the potato tissue. The potato sticks were initially cut to a length of exactly 50 mm and two sticks were placed into each of five boiling tubes containing 20 cm 3 of either 0.0 mol dm –3 (distilled water), 0.25 mol dm –3 , 0.5 mol dm –3 , 0.75 mol dm –3 or 1.0 mol dm –3 sucrose solution and labelled as such. (a) The four sucrose solutions were all made up from a stock solution of 1.0 mol dm –3 sucrose solution. Complete Table 1.1 to show the volumes of 1.0 mol dm –3 sucrose solution and distilled water you would have used to make 20 cm 3 of the four concentrations of sucrose solution....
View Full Document
This note was uploaded on 01/25/2012 for the course BIO alevels taught by Professor J.b during the Spring '11 term at Taylor's.
- Spring '11