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Summary edexcel GCSE combined science biology paper 4
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Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 1/Level 2 GCSE (9–1)
Time 1 hour 10 minutes
Paper
reference 1SC0/2BH
Combined Science
PAPER 4
Higher Tier
You must have: Total Marks
Calculator, ruler
Instructions
• Use black ink or ball‑point pen.
• centrethe
Fill in boxes at the top of this page with your name,
number and candidate number.
• Answer allthequestions.
Answer
• – there may questions in the spaces provided
be more space than you need.
• Any diagrams maybeNOT
Calculators may used.
• You must show all yourbeworking
accurately drawn, unless otherwise indicated.
• end of your solution. out with your answer clearly identified at the
Information
• The total mark for this paper is 60.
• – usemarks
The for each question are shown in brackets
this as a guide as to how much time to spend on each question.
• structure yourmarked
In questions with an asterisk (*), marks will be awarded for your ability to
answer logically, showing how the points that you make are related
or follow on from each other where appropriate.
Advice
• Read each question carefully before you start to answer it.
• Try to answer every question.
• your answers if you have time at the end.
Check
Turn over
*P69476A0120*
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Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in a box . If you change your mind about an
answer, put a line through the box and then mark your new answer with a cross .
1 (a) Figure 1 shows xylem and phloem from the stem of a plant.
phloem
xylem
Figure 1
(i) Living cells in phloem use energy to transport sucrose.
Which organelles release energy in living cells?
(1)
A vacuoles
B mitochondria
C nuclei
D ribosomes
(ii) Describe two features of the structure of xylem vessels that can be seen in
Figure 1.
(2)
1. ............................. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. ............................. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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(b) A scientist investigated how the flow of air affected the rate of transpiration in
a plant.
A fan was used to change the flow of air.
The volume of water taken up by the plant was measured.
Figure 2 shows the results of this investigation.
fan switched on
70 after three minutes
65
60
55
50
45
volume of
water taken fan not switched on
40
up by the
plant in mm3
35
30
25
20
15
10
5
0
0 1 2 3 4 5 6 7 8 9 10
time in minutes
Figure 2
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