Centre Number
Candidate Number
General Certificate of Secondary Education
2015–2016
Unit 1 (Biology)
Foundation Tier
GSS11
Science: Single Award
[GSS11]
WEDNESDAY 11 NOVEMBER 2015, MORNING
TIME
1 hour.
INSTRUCTIONS TO CANDIDATES
Write your Centre Number and Candidate Number in the spaces
provided at the top of this page.
Write your answers in the spaces provided in this question paper.
Answer all ten questions.
For Examiner’s
use only
Question
Marks
Number
 1
INFORMATION FOR CANDIDATES
The total mark for this paper is 60.
Figures in brackets printed down the right-hand side of pages
indicate the marks awarded to each question or part question.
Quality of written communication will be assessed in Question 8.
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 3
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 8
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10
Total
Marks
10191
BLANK PAGE
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2
1(a) Shown below is a simple food chain.
Examiner Only
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Sun
grass
rabbit
fox
© CCEA
In this food chain how are the grass and fox described?
Choose from:
primary consumer
:
secondary consumer
original energy source
:
producer
grass _______________________________
fox _______________________________
[2]
(b) Animals get energy from the food they eat. Name two food types that
provide this energy.
Choose from:
vitamin C
:
water
:
carbohydrate
:
calcium
:
fat
1. _______________________________
2. _______________________________
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[2]
[Turn over
2
(a) The diagram below shows an investigation into the contamination of
food.
Flask A
Flask B
neck of flask
broken off
swan neck
fresh soup
fresh soup
two weeks later
soup stayed fresh
soup goes bad
© CCEA
(i) Complete the sentences below.
Choose from:
glass
:
swan neck
microorganisms
:
:
soup
dust particles
The soup in flask A stayed fresh because
_____________________________ were trapped by
the _____________________________. To make sure the
investigation is a fair test it is important that the same type
of _____________________________ is used in both flasks. [3]
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(ii) Name the scientist who first carried out this investigation.
Examiner Only
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Circle the correct answer.
Fleming
Pasteur
Mendel
[1]
(b) The body is able to defend itself against infection in a number of ways.
Using lines, link the method of defence with the correct description.
Method
Description
antibodies injected
into patient
active immunity
antibodies produced
by patient’s body
phagocytosis
phagocytes engulf and
digest microorganisms
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[2]
5
[Turn over
3(a) The diagram below shows the male reproductive system.
Examiner Only
Marks
prostate gland
sperm tube cut
X
Y
testis
Source: CCEA
(i) Name the structure labelled X.
________________________________
[1]
(ii) On the diagram, draw a line from the letter Y to the urethra. [1]
(b)(i) Name the method of contraception shown in the diagram.
[1]
(ii) Using the diagram, explain fully how the method of contraception
shown prevents pregnancy.
[2]
(c) Condoms are another type of contraception. Give two advantages of
using condoms as contraceptives.
1. 2. 10191
[2]
6
Remark
(d) Three students were discussing sexual and asexual reproduction.
Bill
Examiner Only
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Sexual
reproduction
produces variation
in offspring
Sexual
reproduction
only needs one
parent
Tony
Asexual
reproduction
produces identical
offspring
Sean
Source: CCEA
One of the statements is incorrect.
Name the student who made the wrong statement.
________________________________
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[1]
[Turn over
4(a) The diagram below shows how carbon dioxide enters and leaves
the atmosphere. The arrows show the movement of carbon dioxide.
The thicker the arrow the more carbon dioxide.
carbon dioxide
in atmosphere
photosynthesis
combustion
X
plants
animals
fossil fuels
Source: CCEA
(i) Name the process labelled X in the diagram.
[1]
(ii) Using the diagram, explain why the amount of carbon dioxide in
the atmosphere is increasing.
[2]
(b)
The increase in carbon dioxide is leading to global warming.
Give one effect of global warming.
[1]
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BLANK PAGE
(Questions continue overleaf)
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[Turn over
5(a) The table below shows the number of deaths in Northern Ireland
between 2002–2012 that are linked to the bacterial infection MRSA.
Year
Number of deaths
linked to MRSA
2002
26
2003
30
2004
44
2005
69
2006
56
2007
59
2008
84
2009
50
2010
29
2011
30
2012
18
© Crown Copyright 2015/NISRA: Website: www.nisra.gov.uk
(i) Using the data in the table complete the histogram below.
100
Number of deaths linked to MRSA
80
60
40
20
0
2002
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2003
2004
2005
2006
2007
2008
Year
10
2009
2010
2011
2012
[2]
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(ii) Describe the trend in this data from 2008 to 2012.
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[1]
(iii)Suggest one reason for this trend.
[1]
(b) Unlike many bacterial infections, MRSA infections are very difficult to
treat with antibiotics. Explain fully what makes MRSA infections very
difficult to treat.
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[2]
11
[Turn over
6
Lichens are good indicators of air pollution. Sulfur dioxide produced by
burning fossil fuels is particularly harmful to lichens.
Examiner Only
Marks
(a)
Complete the following sentence.
When sulfur dioxide mixes with moisture in the air
it produces ___________________________
[1]
(b) The number of different types of lichen species in 1 m2 at the base of
a beech tree was counted. This was repeated at different distances
from a town centre.
The percentage of the 1 m2 grid covered by lichen was also recorded.
lichens
beech tree
different types of lichen
1 m² grid
Source: CCEA
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12
Remark
The results are shown in the table below.
Examiner Only
Marks
Remark
Distance from town centre/km
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Number of species
of lichen
0
1
3
3
4
5
5
5
5
Percentage cover/%
0
10
10
20
20
30
30
30
30
Using the information provided, answer the following questions.
(i) Give the shortest distance from the town centre that sulfur dioxide
no longer affects lichen.
_________________ km [1]
(ii)Suggest one way the investigation could be made more reliable.
[1]
(iii)Suggest one reason why there is more sulfur dioxide pollution in a
town centre than in the countryside.
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[1]
13
[Turn over
7(a)
The diagram below shows a short section of DNA.
Examiner Only
Marks
© luismmolina/ iStock/ Thinkstock.com
(i) What name is given to the shape of DNA?
______________________________
[1]
(ii) DNA is formed into chromosomes. What are short sections of
chromosomes called?
______________________________
[1]
(b)
In sweet pea plants, the allele for red flowers (R) is dominant to the
allele for white flowers (r).
(i) Give the two possible genotypes of a plant producing red flowers.
1.
______________________________
2.
______________________________
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[2]
Remark
A red flowered plant and a white flowered plant were bred together.
There were four offspring produced; two that produced red flowers
and two that produced white flowers.
Examiner Only
Marks
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(ii) Complete the Punnett square to show the gametes of the parent
plants and the genotypes of the offspring plants.
white flowered plant
red flowered plant
R
Rr
r
[3]
(c) Another type of plant can produce many different colours of flower
between red and white. For example, dark red, light red, pink and
white.
Name this type of variation. Explain your answer.
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[2]
15
[Turn over
8
Describe and explain the effects of diabetes on humans.
Your answer should include:
•
•
•
In this question you will be assessed on your written communication
skills including the use of specialist scientific terms.
Examiner Only
Marks
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how and why diabetes affects blood glucose levels
one symptom and one long term effect
an explanation of why the number of people with diabetes is
increasing
[6]
16
Remark
9
Photosynthesis is a light-requiring process that takes place in plants.
In a photosynthesis investigation a leaf of a plant was partly covered with
aluminium foil and placed in bright light.
Examiner Only
Marks
Remark
aluminium foil with
‘T’ shape cut out
© CCEA
After five days in bright light the aluminium foil was removed and the leaf
tested for starch.
(a) Using the outline of the leaf below, shade all the parts where you
would expect to find starch.
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[1]
17
[Turn over
(b) In another investigation, the effects of light intensity and temperature
on photosynthesis were analysed. The apparatus used is shown in the
diagram below.
oxygen bubbles
lamp
thermometer
water heater
pondweed in
beaker of water
© CCEA
© CCEA
(i)Suggest one way the light intensity could be changed.
[1]
(ii) Suggest why it is important to have a thermometer in the beaker
when investigating the effect of light intensity.
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[1]
18
Examiner Only
Marks
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The results of the investigation are shown in the table below.
Examiner Only
Marks
Remark
Number of oxygen bubbles per minute
Light
intensity
Low
Medium
High
10
3
5
12
15
5
10
22
20
8
12
30
Temperature/°C
(iii) Describe and explain the effect of light intensity on the number
of oxygen bubbles produced.
[3]
(iv) Apart from the effect of light intensity, state one other trendshown
by these results.
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[1]
19
[Turn over
10(a) The graph below shows the effect of exercise on the heart rates of three girls.
Exercise
150
140
Orla
130
120
Beth
Heart rate/bpm
110
100
90
80
Kerry
70
60
50
0
0
5
10
15
20
25
30
Exercise
35
© CCEA
Time/minutes
Examiner Only
Marks
(i) Calculate the maximum increase in Orla’s heart rate during
exercise.
_________________ bpm [1]
(ii) Calculate the percentage increase in Orla’s heart rate during
exercise.
_________________ % [1]
(iii) Using the graph, name the girl who is the fittest. Explain your
answer giving one piece of evidence.
Name Explanation 10191
[2]
20
Remark
(b) Exercise helps prevent heart disease.
Describe and explain how heart disease can affect the wider family.
[2]
THIS IS THE END OF THE QUESTION PAPER
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21
Examiner Only
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Permission to reproduce all copyright material has been applied for.
In some cases, efforts to contact copyright holders may have been unsuccessful and CCEA
will be happy to rectify any omissions of acknowledgement in future if notified.
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