Section 5.1 Revision

A student carried out food tests on a food. The table shows the results.

The food may be

(1) broccoli

(2) milk

(3) orange

• (1) only

• (2) only

• (1) and (2) only

• (2) and (3) only

Which of the following correctly matches a food substance with its deficiency disease?

• A

  calcium & rickets

• B

  iron & night blindness

• C

  vitamin A & anaemia

• D

  vitamin C & constipation

In which of the following pairs of carbohydrates can Benedict's test be used to distinguish the two carbohydrates from one another?

(1) sucrose and starch

(2) sucrose and maltose

(3) glucose and maltose

(4) glucose and starch

• (1) and (3) only

• (1) and (4) only

• (2) and (3) only

• (2) and (4) only

Which of the following food substances provides most of the energy content in this food product?

• fat

• protein

• sodium

• carbohydrate

The food product bearing this nutrition label is most likely to be

• milk

• bread

• sausages

• potato chips

A student carried out a series of tests on two tubes of solutions. Tube X contained a mixture of sucrose and cellulose, while tube Y contained starch and fructose. Which of the following correctly shows the results?

• A

• B

• C

• D

The following charts show the composition of four different foodstuffs. Which foodstuff yields the highest amount of energy per gram?

• A

• B

• C

• D

The graph shows the changes in the amount of three substances (in terms of the percentage of the original amount) in the human body upon starvation.

Which of the following shows the substances that X, Y and Z most probably are?

• X: fat; Y: protein; Z: glycogen

• X: fat; Y: glycogen; Z: protein

• X: glycogen; Y: protein; Z: fat

• X: protein; Y: fat; Z: glycogen