PPT B1.1.Diet and Exercise

Report
B1.1 Diet and exercise
GCSE items that can be used to define successful outcomes
for peer and self assessment activities
Using Exam pro items to support successful
outcomes
Learners will be able to test their progress against learning outcomes
using questions taken from past AQA GCSE examinations.
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• B1.1 Diet and Exercise : Evaluating slimming claims
BL1FP June 2012
Scientists measured the amount of energy used by four people, A, B, C
and D.
The scientists also measured the amount of energy taken in as food by
each person. The chart shows the scientists’ results.
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B1.1 Diet and Exercise : Evaluating slimming claims BL1FP June 2012
•
a) (i) What was the mean amount of energy used by D?
...................................................................... kJ per day
(1 mark)
(ii) The amount of energy used by D is different from the
amounts of energy used by A, B and C.
Suggest two reasons why.
...........................................................................................
...........................................................................................
...........................................................................................
(2 marks)
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•
B1.1 Diet and Exercise : Evaluating slimming claims BL1FP June 2012
•
(b) The data in the bar chart was collected over twelve months.
Which person, A, B, C or D, would gain body mass over the
twelve months? Give a reason for your answer.
...........................................................................................
...........................................................................................
...........................................................................................
(2 marks)
(c) In the UK many people are obese. Doctors advise obese
people to lose mass.
Suggest two different ways an obese person could lose mass.
...........................................................................................
...........................................................................................
(2 marks)
...........................................................................................
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Mark scheme
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•
B1.1 Diet and Exercise : Evaluating slimming claims BL??? June 2012
•
B1.1 Diet and Exercise : Evaluating slimming claims BL1FP June 2012
A popular diet book claims that a low-carbohydrate diet results in quicker weight loss and
a more healthy body than a low-fat diet.
Scientists carried out an investigation to see if this claim is true.
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They used 120 overweight volunteers divided into two equal groups.
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Group 1 was given a diet containing less than 20 g of carbohydrate per day.
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Group 2 was given a low-fat diet. This contained less than 30% of energy from fat
and less than 300 mg of cholesterol per day.
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Both groups were given the same exercise programmes and a weekly information
meeting.
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Both groups were allowed only 2000 kilocalories per day.
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B1.1 Diet and Exercise : Evaluating slimming claims BL1FP June 2012
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•
B1.1 Diet and Exercise : Evaluating slimming claims BL1FP June 2012
One day a ten-year-old child ate a whole packet of the biscuits.
The biscuits in the pack had a mass of 400 g.
1. How many grams of carbohydrate did the child eat?
2. The amount of carbohydrate you calculated in part 1 was more than
the UK guideline daily amount for the child. How much more?
3. 3. Give two possible health effects on the child of eating so many
biscuits every day.
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B1.1 Diet and exercise BL1FP-QP-Jun12
B1.1 Diet and exercise BL1FP-QP-Jun12
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B1.1 Diet and exercise BL1FP-PostS-MS-Jun12
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