Answer all questions
1a) State 3 functions of saliva.
(b) State 3 functions of the large intestine.
(c) State 4 ways in which working of the alimentary canal can be enhanced.
2a) What is enzymes?
(b) Name one food nutrients acted upon by each of the following digestive enzymes:
(i) Trypsin
(ii)Renin
(iii) Lipase
(iv) Amylase
3.Describe the process of protein absorption in the small intestine.*
4)Explain the pollution in relation to Health Education.
5(a) Mention three substances found in the urine of humans.
(b) State 2 reasons why human takes water when the weather is hot.
6.Name the two major layers of the human skin.And state it's functions.
(7a) State five features necessary for the maintenance of health.
(b) State five features of Endomorphs.
(c)Explain the following terms :
(i) Personal hygiene
(ii) Physical health
(iii) blood pressure
(d) List four injuries that could occurs in the muscles of humans.
8ai). What is meant by the term homeostasis?
a(ii). Explain how the human body maintain a constant body temperature in cold environment.
(b) State :
(i). 3 food sources of iodine.
(ii). 2 deficiencies of iodine.
(iii). One function of fluorine in the human body.
(c). Draw and label an elbow joint.
(9a). State 2 similarities each between the following pairs of diseases.
(i). Dysentery and Cholera.
(ii). Malaria and Yellow Fever.
(iii). Tuberculosis and whooping cough.
b(i). Mention 2 insects associated with human.
(ii). State 4 methods of controlling insect in homes.
(c). State 2 advantages of each of the following methods of food preservation :
(i). Baking
(ii). Roasting
(iii). Frying
(iv). Boiling
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