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1. Over the last few years there has been much public concern over the diet of people in
the UK and its effects upon their weight and health.

Body Mass Index is a calculation used by doctors to indicate whether a person is
underweight or overweight.

(a) State the medical…

Page 2

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(b) In any unbalanced diet it is possible that there may be a deficiency of certain
nutrients.

Suggest one nutrient that may be deficient in diet B and one in diet C.

Diet B ..............................................................................................................

Diet C ..............................................................................................................
[2]




(c) (i) Explain which diet, B or C, is likely to…

Page 3

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(d) Doctors suggested that diet C may not be very healthy in the long term, as it
contains unlimited amounts of fats and no fruit.

Suggest what potential health problems, other than continued weight loss,
might result in a person who kept to a low carbohydrate diet, similar to diet…

Page 4

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(d) (no fruit may mean) scurvy/described; R vitamin C deficiency unless qualified
raised, cholesterol/LDL, levels in blood; R intake
fatty substances deposited in artery walls/atherosclerosis;
coronary arteries;
narrows lumen;
reduces, blood/oxygen, delivered to heart muscle;
CHD/heart attack/angina;
thrombosis/clot;
raised blood pressure/hypertension;
stroke;
stress on liver;
stress on kidney;
due to…

Page 5

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3. Read the following passage and complete each sentence by writing the most
appropriate word in the spaces provided.

Health can be defined as a state of complete ....................................., mental and social

well-being. It is not merely the absence of infirmity or ..................................... . Many people

may consider themselves healthy,…

Page 6

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5. The table below shows data from research investigating the presence of pesticide
(insecticide and herbicide) residues in drinking water in the UK from 1995 to 1998.

number of samples % of samples over
pesticide
analysed over 4 years safe limit for drinking
insecticide lindane 2227 0.7
DDT 1057 0.2…

Page 7

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6. (a) persistent chemical/AW;
builds up in food chains;
still used in other parts of the world; (and so can still enter ecosystems)
ref to global cycling;
AVP; max 2


(b) to remove weeds from crops to increase yield/AW;
ref to decreased competition (in crops)/AW;
quicker and cheaper (than using…

Page 8

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8. Tau-fluvalinate;
less needed/ref to data with correct units; max 2
[2]




9. The effect of diet on cancer mortality is partly due to its effect on obesity. Obesity is
defined as having a Body Mass Index (BMI) over 24.9. BMI is calculated by the
following formula.

body mass kg…

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(ii) Use the figure above to explain the likelihood of this woman dying from cancer.

.........................................................................................................................

.........................................................................................................................

.........................................................................................................................

.........................................................................................................................
[2]
[Total 4 marks]




10. (i) 105
(1.7)2; A 105/2.89
BMI = 36; A 36.3 or 36.33 2


(ii) BMI is 35 to 39.9; A ecf
relative risk of dying is…

Page 10

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(b) Some amino acids are known as essential amino acids.

(i) State what is meant by the term essential amino acids.

................................................................................................................

................................................................................................................
[1]




(ii) Outline the functions of essential amino acids in the body.

................................................................................................................

................................................................................................................

................................................................................................................

................................................................................................................
[2]




(c) The photograph below shows a child with kwashiorkor, a…

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