7. NUTRIENTS

Which two foods would provide the best sources of carbohydrates, calcium, fibre (roughage) and
vitamin C?

Some factors associated with coronary heart disease are listed.
1 high blood pressure
2 high intake of fruit and vegetables
3 high intake of saturated fats
4 low blood cholesterol
5 low intake of processed foods

Which factors decrease the risk of coronary heart disease?

The element nitrogen is needed to form

Which row correctly shows an advantage of feeding babies breast milk and an advantage of
feeding them bottle milk?

What are the basic units from which glycogen is synthesised?

A food is known to contain protein, but no reducing sugar.
When this food is tested with biuret solution and Benedict’s solution which colours would a
student observe?

A student grows seedlings in four different test-tubes.
Tube W contains all the mineral ions needed for healthy plant growth.
The other three tubes contain
●water

●all minerals except magnesium ions

●all minerals except nitrates

The diagram shows the appearance of these seedlings after two weeks.

What do tubes X, Y and Z contain?

The health of a population’s teeth can be measured by finding the average number of decayed,
missing or filled teeth per person. This is called the DMFT.
The graph shows the DMFT for four countries in the years between 1980 and 1995. Australia and
the USA have fluoride added to their water but Japan and Belgium do not

The following statements were made.
1 The health of teeth has improved in all four countries.
2 Japan showed the greatest improvement.
3 Adding fluoride to the water causes the health of teeth to improve.

Which statements are supported by the graph?

Which is a large molecule built up from amino acids?

Which symptom of malnutrition can be treated by an increased amount of protein in the diet?