Jan 2013 Higher – B1 – 6 marks
Jan 2013 Higher B2
Jan 2013 B2 Higher
June 2012 B1 Higher – 6 marks
June 2012 B2 Foundation
June 2012 B2 Foundation
June 2012 B1 Higher
Specimen B1 – 6 marks
Specimen B1 – Higher – 6 amrks
Specimen B1 - Higher
Specimen B1 Higher – 6 marks
Specimen B2 – 6 marks
Specimen B3
Specimen B3
June 2012 B2 Higher – 6 marks
B1 Higher June 2013 – 6 marks
B1 Higher June 2013 - 6 marks
4 marks, B1 Higher June 2013
B2 Higher June 2013
B2 Higher June 2013
B3 Higher June 2013
B3 Higher June 2013
B1 Long Answer Questions from e-AQA
Q1.
A student accidentally touches a sharp object.
Her hand is immediately pulled away from the object.
The diagram shows the structures involved in this response.
Describe how the structures labelled on the diagram are involved in this reflex action.
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(Total 4 marks)
Q2.
A student grew a plant in an upright pot.
She then put the pot in a horizontal position and left the plant in the dark for two days.
Diagram 3 shows the potted plant after two days in the dark.
Plant growing
upright
Plant put horizontal
in the dark
Plant after 2 days
in the dark
Explain fully why the plant responded in this way.
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(Total 4 marks)
Q3.
Mumps is a disease caused by a virus. Mumps vaccine is usually given to children as part of
the MMR vaccine.
(a)
What diseases, other than mumps, does the MMR vaccine protect against?
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(2)
(b)
Mumps vaccines contain mumps viruses. Suggest why these viruses do not cause mumps.
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(1)
(c)
Explain how the vaccine makes someone immune to mumps.
To gain full marks in this question you should write your ideas in good English. Put them into a
sensible order and use the correct scientific words.
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(5)
(d) A child who has not been given the mumps vaccine catches mumps. Suggest why a doctor
would not give antibiotics to cure the child of mumps.
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(1)
(Total 9 marks)
Q4.
Each autumn, many trees lose their leaves.
(a) Describe how carbon compounds in the leaves can be recycled so that they can be used again
by the trees.
To gain full marks in this question you should write your ideas in good English. Put them into a
sensible order and use the correct scientific words.
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(4)
(b) Give two environmental conditions which speed up the processes that you have described in
part (a).
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(2)
(Total 6 marks)
Q5.
Penicillin is an antibiotic which stops bacteria from reproducing. It was used a lot in the
past to treat bacterial infections in humans and other animals. In many hospitals there are now
strains of penicillin resistant bacteria.
Explain how natural selection could have produced these strains of penicillin resistant bacteria.
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(Total 5 marks)
Q6.
(a)
Explain how diseases caused by bacteria are usually treated by doctors.
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(2)
(b)
Explain, as fully as you can, how white blood cells protect us from disease.
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(5)
(Total 7 marks)
Q7.
The diagram below shows a food web for a wood.
(a) The diagrams below show a pyramid of the numbers and a pyramid of the biomass for 0.1
hectare of this wood.
(i)
Name one organism from the level labelled X.
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(1)
(ii) Explain, as fully as you can, why the level labelled Y is such a different width in the two
pyramids.
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(3)
(b) Explain, as fully as you can, what eventually happens to energy from the sun which is captured
by the plants in the wood.
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(10)
(Total 14 marks)
Q8.
The diagram below shows a food web for some of the organisms which live in a pond.
You may need to use information from the food web to help you to answer the following questions.
(a)
The algae photosynthesise. Complete the equation for photosynthesis.
carbon
dioxide
(2)
+
+
light energy
sugar
+
(b) Only a small percentage of the Sun’s energy captured by the algae is eventually incorporated
into the body tissues of the stickleback. Explain, as fully as you can, what happens to the rest of the
energy captured by the algae.
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(8)
(Total 10 marks)
B2 Long Answer Qs from e-AQA
Q1.
(a)
During evolution, many groups of animals have become extinct (died out).
The graph shows how the number of animal groups has changed over time.
Harold L Levin, The Earth Through Time,© 2005,
Reprinted with permission of John Wiley & Sons, Inc.
How has the number of animal groups changed between 200 million years ago and the present day?
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(1)
(b) In this question you will be assessed on using good English, organising information clearly and
using specialist terms where appropriate.
Describe the different causes of the extinction of organisms.
Your description should include possible reasons for the mass extinctions shown on the graph.
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(6)
(Total 7 marks)
Q2.
Sometimes babies are born with extra fingers or toes as shown in the photograph.
This condition is called polydactyly.
©CNRI / SCIENCE PHOTO LIBRARY
The diagram shows the inheritance of polydactyly in a family.
(a) Polydactyly is caused by a dominant allele, D.
The recessive allele of the gene is represented by d.
Use one genetic diagram to show the inheritance of the polydactyly gene by R and S.
(4)
(b) In this question you will be assessed on using good English, organising information clearly and
using specialist terms where appropriate.
Embryos can be screened for genetic disorders.
Many people would favour the use of embryo screening for cystic fibrosis but not for polydactyly.
Compare the issues involved in the use of embryo screening for cystic fibrosis and for polydactyly.
You should use your knowledge and understanding of the process and the two conditions.
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(6)
(Total 10 marks)
Q3.
Meiosis and mitosis are different types of division in human cells. Compare the two
processes by referring to where each takes place and the kind of products that are made.
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(Total 6 marks)
B3 – Long Answer Qs from e-AQA
Q1.
The figures below show the levels of carbon dioxide in air from 150 000 years ago.
TIME
CARBON DIOXIDE CONCENTRATION
1500 years ago
270 parts per million
1800 AD
290 parts per million
1957
315 parts per million
1983
340 parts per million
(a)
Explain why carbon dioxide levels in the atmosphere are changing.
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(3)
(b) It is suggested that the increased level of carbon dioxide in the air is causing the atmosphere to
warm up (the “Greenhouse Effect”).
Describe, as fully as you can, two major effects of global warming and how these may affect
the human population.
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(6)
(Total 9 marks)
Q2.
Coal is used in many power stations.
To gain full marks in this question you should write your ideas in good English. Put them into a
sensible order and use the correct scientific words.
Use information from the diagram to describe, in as much detail as you can, how using coal in
power stations can damage the environment.
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(Total 4 marks)
Q3.
Humans damage the environment in many ways, including deforestation.
© Kazuyoshi Nomachi/Corbis
In this question you will be assessed on using good English, organising information clearly and using
specialist terms where appropriate.
The diagram shows an area where the forest is being cleared.
Describe the reasons why deforestation is taking place and the effects that deforestation has on the
environment.
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(Total 6 marks)