WAEC Health Science Question And Answer 2021

WAEC Health Science Question And Answer 2021

1. (a) (i) Give two reasons why food is cooked.
(ii) State three cooking methods.
(b) Mention one advantage and one disadvantage of each method stated in (a)(ii) above.
(c) Describe how each of the following methods helps to preserve food:

(i) freezing;
(ii) dehydration;
(ii) salting.

2. (a) (i) What are enzymes?
(ii) State five characteristics of enzymes.
(iii) Name two enzymes involved in carbohydrate digestion in the body.
(b) Name the end product of the digestion of the following classes of food:

(i) carbohydrates;
(ii) proteins;
(iii) fats.
(c) State two uses each of the following classes of food in the human body;
(i) proteins;

(ii) vitamins.
(d) State two benefits each of including the following food substances in the diet of
humans:

(i) roughage;
(ii) water.

3. (a) (i) What is posture?
(ii) State three causes of postural defects
(b) List three defects of the foot

(c) State two corrective measures for postural defects.

4. (a) List two natural sources of water.
(b) State three general uses of water by humans.

(c) Name the international health agencies/organizations associated with the following functions:
(i) standardization of drugs for international use;

(ii) performing first aid activities and training personnel in first aid;
(iii) provision of recreational facilities and equipment for school children;
(iv) providing information on the outbreak of epidemics;

(v) rehabilitation of victims of wars, floods, or drought.

5. (a) Mention the three-body forms in humans.
(b) State two features of each body form mentioned in (a) above.

(c) State one factor necessary for the maintenance of health.

6.

PAPER 2

1. (a) (i) What are enzymes?
(ii) State five characteristics of enzymes

(iii) Name two enzymes involved in carbohydrate digestion in the body

(b) Name the end-product of digestion of
(i) carbohydrates;
(ii) proteins;
(iii) fats.

(c) State two uses each of the following classes of food:
(i) proteins;

(ii) vitamins.

(d) State two ways each in which the following substances are important
in the diet of humans:
(i) Roughage;
(ii) Water.

2. (a) Explain the following terms:
(i) shock;
(ii) fainting.

(b) (i) State three symptoms of shock
(ii) Outline the steps taken in the first aid treatment of shock victims.

(c) Explain the following terms:
(i) kyphosis;
(ii) scoliosis.

(d) Explain the following terms associated with bone injuries:
(i) dislocation;
(ii) sprain.

3. (a) (i) What is an endocrine gland?
(ii) State three functions of adrenalin.

(b) State three effects of each of the following conditions in humans:
(i) over-secretion of thyroxin;
(ii) under-secretion of thyroxin.

(c) (i) Write HIV in full.
(ii) Distinguish between HIV and AIDS.

(d) State two methods each by which the vectors of the following diseases can be controlled:
(i) onchocerciasis;
(ii) schistosomiasis;

(iii) guinea worm.

1. The diagram below is an illustration of the male urine-genital system study it carefully and use it to answer questions 1(a) to 1(c)

(a) Name the parts labeled I to VIII
(b) State one function each of the parts labeled V, VI, and VIII
(c) Name three diseases associated with the system.

2. The diagram below illustrates the skeleton system of humans
Study it carefully and use it to answer questions 2(a) to 2(d).

(a) Name the parts labeled I to VI
(b) Mention one labeled part which represents a bone in the
(i) axial skeleton;
(ii) appendicular skeleton.
(c) Name the joint between

(i) II and VI
(ii) IV and V.
(d) State three ways in which the skeletal system is important to the human body.

3. (a) (i) What is posture?
(ii) State three causes of postural defects

(b) List three defects of the foot
(c) State two corrective measures for postural defects.

4. (a) List two natural sources of water.
(b) State three general uses of water by humans.

(c) Name the international health agencies/organizations associated with the following functions:
(i) standardization of drugs for international use;
(ii) performing first aid activities and training personnel in first aid;

(iii) provision of recreational facilities and equipment for school children;
(iv) providing information on outbreak of epidemics;
(v) rehabilitation of victims of wars, floods or drought.

5. (a) Mention the three-body forms in humans.
(b) State two features of each body form mentioned in (a) above.
(c) State one factor necessary for the maintenance of health.

PAPER 2

1. (a) (i) What are enzymes?
(ii) State five characteristics of enzymes
(iii) Name two enzymes involved in carbohydrate digestion in the body

(b) Name the end-product of digestion of
(i) carbohydrates;
(ii) proteins;
(iii) fats

(c) State two uses each of the following classes of food:
(i) proteins;
(ii) vitamins.

(d) State two ways each in which the following substances are important
in the diet of humans:
(i) Roughage;
(ii) Water.

2. (a) Explain the following terms:
(i) shock;
(ii) fainting.

(b) (i) State three symptoms of shock
(ii) Outline the steps taken in the first aid treatment of shock victims.

(c) Explain the following terms:
(i) kyphosis;
(ii) scoliosis.

(d) Explain the following terms associated with bone injuries:
(i) dislocation;
(ii) sprain.

3. (a) (i) What is an endocrine gland?
(ii) State three functions of adrenalin.

(b) State three effects of each of the following conditions in humans:
(i) over-secretion of thyroxin;
(ii) under-secretion of thyroxin.

(c) (i) Write HIV in full.
(ii) Distinguish between HIV and AIDS.

(d) State two methods each by which the vectors of the following diseases can be controlled:
(i) onchocerciasis;
(ii) schistosomiasis;
(iii) guinea worm.

These are provided for study purposes only.

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