( (a) (i) What are enzymes? [2 marks]
(ii) State five characteristics of enzymes. [5 marks]
(iii) Name two enzymes involved in carbohydrate digestion in the body.
[2 marks]
(b) Name the end product of digestion of the following classes of food:
(i) carbohydrates;
(ii) proteins;
(iii) fats. [3 marks]
(c) State two uses each of the following classes of food in the human body;
(i) proteins;
(ii) vitamins. [4 marks]
(d) State two benefits each of including the following food substances in the diet of
humans:
(i) roughage;
(ii) water. [4 marks] |