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![Page 1: keswickgcsebiology.weebly.comkeswickgcsebiology.weebly.com/.../4/...questions.docx · Web viewJan 2013 Higher – B1 – 6 marks. JJJune 2012 B1 Higher – 6 marks. June 2012 B1](https://reader033.vdocument.in/reader033/viewer/2022041923/5e6cc1180adf006cbf7e2f24/html5/thumbnails/1.jpg)
Jan 2013 Higher – B1 – 6 marks
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JJJune 2012 B1 Higher – 6 marks
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June 2012 B1 Higher
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Specimen B1 – 6 marks
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Specimen B1 – Higher – 6 marks
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Specimen B1 - Higher
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Specimen B1 Higher – 6 marks
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B1 Higher June 2013 – 6 marks
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B1 Higher June 2013 - 6 marks
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4 marks, B1 Higher June 2013
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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)
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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 growingupright
Plant put horizontalin the dark
Plant after 2 daysin the dark
Explain fully why the plant responded in this way.
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(Total 4 marks)
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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)
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(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)
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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)
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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)
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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)
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(ii) Explain, as fully as you can, why the level labeled 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)
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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
+ + light energy sugar +
(2)
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(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)