cameroon gce intermediate level 2024 natural science 2
cameroon gce intermediate level 2024 natural science 2
(a) i) What is mechanical digestion?
ii)Which enzyme in saliva begins the digestion of carbohydrate?
(b) Explain the total process of carbohydrate digestion in man.
(c) Define the following:
Food preparation.
Food preservation.
Digestion.
Kwashiorkor.
TOTAL
(2 marks)
(8 marks)
(a) Where in a matured lady are the eggs (ova) produced?
(b) Draw the male reproductive organ and label SIX of its parts.
(c) Briefly explain the following birth control methods:
i) Vasectomy.
Condom.
Intra–uterine device,
| iv) v) |
Diaphragm. Withdrawal. |
ii)
iii)
TOTAL
3) (a) Define the following:
i) Inhalation.
ii) Exhalation.
)
(b) i) What is tissue respiration?
ii) Why is tissue respiration important to humans?
iii) Differentiate between aerobic and anaerobic respiration
| (c) Draw a cross–section diagram of the human respiratory system and label SIX parts. TOTAL |
(8 marks) (20 MARKS) |
| (a) Draw‘ a cross–section diagram of the human heart and label SIX parts. (b) Give FOUR functions of blood. |
(8 marks) (4 marks) |
(c) With the use of a table, show the compatibility of the different blood groups that exist in man. (8 marks)
4)
TOTAL (20 MARKS)
(a) Define the term HORMONES. (2 marks)
(b) Which hormones are responsible for the following?
(i) Production of breast milk.
(ii) Sperm production.
(iii) Birth or delivery.
(iv) Fight or fright.
(v) Regulation of blood sugar level.
(c) Draw a cross–section of a human body, showing SIX endocrine glands.
5)
(8 marks)
TOTAL (20 MARKS)
(a) State THREE functions of the skeleton in man.
(b) Differentiate between the following:
6) (3 marks)
(i) Sprain and strain.
(ii) Dislocation and Fracture.
(iii) Tendon and ligaments.
(c) What is the general name for any injury of:
(i) Bone.
(20 MARKS)
(d) List TWO bones of the pelvic girdle.
(e) Why are some rib bones called “True” and “False” rib?
(f) Describe the shape of the backbone and state its importance in man.
TOTAL
is an atom?
(ii) Name THREE subatomic particles.
(iii) The atom of a certain dement, P, is represented as follows:
IJP. What do the numbers 23 and 11 stand for?
(iv) What is the number of neutrons of the element P above?
7)
(3 marks)
(b) (i) Define “motion” and list THREE types of motions.
(ii) Define potential energy and kinetic energy.
(iii) What is the difference between renewable energy and non-renewable energy?
(1 mark)
(1 mark)
(c) (i) Give ONE example of renewable energy source .
(ii) Give ONE example of non–renewable energy source.
