This question paper consists of 6 printed pages, a Supervisor’s Report and 1 blank page.
SP (NF/JB) S17031/3
© CIE 2002
CAMBRIDGE INTERNATIONAL EXAMINATIONS
Joint Examination for the School Certificate
and General Certificate of Education Ordinary Level
PAPER 3 Practical Test
OCTOBER/NOVEMBER SESSION 2002
1 hour 15 minutes
Candidates answer on the question paper.
As listed in Instructions to Supervisors
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 both questions.
Write your answers in the spaces provided on the question paper.
Use a sharp pencil for your drawings. Coloured pencils or crayons should not be used.
INFORMATION FOR CANDIDATES
The intended number of marks is given in brackets [ ] at the end of each question or part question.
FOR EXAMINER’S USE
Instructions to candidates
Read the whole of the question paper carefully before you begin.
Set up the experiment for Question 1 and then go on to Question 2 while you are waiting. Leave
at least 15 minutes to complete Question 1 before the end of the examination.
You are required to investigate the concentration of the cell sap in potato tissue.
You are provided with one or more slices of potato tissue.
(a) • Remove the potato tissue from the solution and blot it gently to remove surface
• Cut 4 strips of potato, exactly 70 mm long by approximately 10 mm wide.
Put a strip into each of the salt solutions, A, B, C and D, so that the strips are
Leave them for at least 25 minutes and, during this time, start Question 2.
After 25 minutes, remove the strip from solution A, blot it gently, then measure the
length of the strip to the nearest 0.5 mm.
(i) Record the measurement in Table 1.1.
• Repeat this procedure for the strips from solutions B, C and D.
(ii) Complete Table 1.1.