Which part of the human ear is responsible for maintaining balance?
A.Cochlea
B.Eardrum
C.Semi-circular canals
D.Eustachian tube
13.1 mark
The accumulation of lactic acid in muscles during strenuous exercise leads to:
A.Muscle fatigue
B.Muscle growth
C.Increased energy production
D.Improved muscle coordination
14.1 mark
Which of the following is an adaptation of desert plants to conserve water?
A.Large, broad leaves
B.Shallow root systems
C.Thick, waxy cuticles
D.Numerous stomata
15.1 mark
The process by which organisms with traits better suited to their environment tend to survive and reproduce more offspring is called:
A.Genetic drift
B.Artificial selection
C.Natural selection
D.Mutation
16.1 mark
Which of the following is a non-communicable disease?
A.Tuberculosis
B.Malaria
C.Diabetes
D.Cholera
Section B
2.6 marks
Match the uses of components of the First Aid kit in List A with their corresponding components in List B by writing the letter of the correct response beside the item number in the answer booklet provided.
List A
List B
(i) Covering wounds to protect them from dirt and germs.
A Soap
B Liniment
C Cotton wool
(ii) Cleaning and drying wounds.
D Sterile gauze
(iii) Covering the hands to avoid infection of the wounds.
E Petroleum jelly
F Razor blades
(iv) Treating burns and scalds.
G Sterile gloves
(v) Securing bandages.
H Safety pins
(vi) Reducing muscle pain.
(i)
Covering wounds to protect them from dirt and germs.
1 mk
(ii)
Cleaning and drying wounds.
1 mk
(iii)
Covering the hands to avoid infection of the wounds.
1 mk
(iv)
Treating burns and scalds.
1 mk
(v)
Securing bandages.
1 mk
(vi)
Reducing muscle pain.
1 mk
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3.0 marks
A woman visited a food seller and bought the following foods: eggs, Irish potatoes and sunflower seeds.
(a)
Identify the type of nutrient found in each of the food items listed.
0 mk
(a)
Identify the type of nutrient found in each of the food items listed.
3 mk
(b)
Give four functions of the nutrient identified in the eggs.
1 mk
(b)
Give four functions of the nutrient identified in the eggs.
0 mk
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4.0 marks
Why are personal hygiene and good manners important in our daily life? Give six points.
(none)
Why are personal hygiene and good manners important in our daily life? Give six points.
6 mk
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5.0 marks
When doing experiment, accidentally Bahati touched hot water with her finger and she immediately withdrew it.
(a)
Explain the process of impulse flow from touching the hot water to the moment she responded. Give five points.
5 mk
(a)
Explain the process of impulse flow from touching the hot water to the moment she responded. Give five points.
0 mk
(b)
Draw the sensory neurone that picked up the nerve impulses from the receptor when she touched the hot water and label any four parts.
3 mk
(b)
Draw the sensory neurone that picked up the nerve impulses from the receptor when she touched the hot water and label any four parts.
0 mk
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6.0 marks
How does irresponsible sexual behaviour differ from responsible sexual behaviour?
(a)
How does irresponsible sexual behaviour differ from responsible sexual behaviour?
3 mk
(a)
How does irresponsible sexual behaviour differ from responsible sexual behaviour?
0 mk
(b)
Briefly explain four ways which can be used to eradicate irresponsible sexual behaviour.
0 mk
(b)
Briefly explain four ways which can be used to eradicate irresponsible sexual behaviour.
4 mk
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7.0 marks
Explain the importance of movement to the living organisms. Give two points.
(a)
In three points, differentiate movement from locomotion.
0 mk
(a)
In three points, differentiate movement from locomotion.
3 mk
(b)
Explain the importance of movement to the living organisms. Give two points.
2 mk
(b)
Explain the importance of movement to the living organisms. Give two points.
0 mk
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8.0 marks
When a red-flowered rose plant was crossed with a white flowered rose plant all members of the F1 generation were pink. Using genetic diagrams illustrate the cross made.
(none)
When a red-flowered rose plant was crossed with a white flowered rose plant all members of the F1 generation were pink. Using genetic diagrams illustrate the cross made.
5 mk
(a)
When a red-flowered rose plant was crossed with a white flowered rose plant all members of the F1 generation were pink. Using genetic diagrams illustrate the cross made.
0 mk
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17.10 marks
Figure 1 shows a diagram of a plant cell.
(a) Identify the parts labeled P, Q, and R.
(b) State the function of part P.
(c) Explain the process of osmosis.
(d) Differentiate between plant and animal cells.
(a)
Identify the parts labeled P, Q, and R.
3 mk
(b)
State the function of part P.
1 mk
(c)
Explain the process of osmosis.
3 mk
(d)
Differentiate between plant and animal cells.
3 mk
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18.10 marks
Figure 2 shows a simple food chain.
Sun → Grass → Grasshopper → Frog → Snake
(a) Identify the producer and the primary consumer in this food chain.
(b) Explain the flow of energy through this food chain.
(c) What would happen if the population of frogs decreased significantly?
(d) Define the term 'ecosystem'.
(a)
Identify the producer and the primary consumer in this food chain.
2 mk
(b)
Explain the flow of energy through this food chain.
3 mk
(c)
What would happen if the population of frogs decreased significantly?
3 mk
(d)
Define the term 'ecosystem'.
2 mk
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19.10 marks
Figure 3 is a diagram of the human respiratory system.
(a) Identify the parts labeled A, B, and C.
(b) State the main function of part A.
(c) Describe the process of gas exchange in the lungs.
(d) What is the role of the diaphragm in breathing?
(a)
Identify the parts labeled A, B, and C.
3 mk
(b)
State the main function of part A.
1 mk
(c)
Describe the process of gas exchange in the lungs.
3 mk
(d)
What is the role of the diaphragm in breathing?
3 mk
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20.10 marks
Figure 4 shows a diagram of a bacterium.
(a) Identify the parts labeled X and Y.
(b) State one function of part X.
(c) Explain how bacteria reproduce.
(d) Name one disease caused by bacteria and how it can be prevented.
(a)
Identify the parts labeled X and Y.
2 mk
(b)
State one function of part X.
1 mk
(c)
Explain how bacteria reproduce.
3 mk
(d)
Name one disease caused by bacteria and how it can be prevented.
4 mk
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21.10 marks
Figure 5 shows the structure of a human tooth.
(a) Identify the parts labeled P, Q, and R.
(b) State the function of part Q.
(c) Explain the process of tooth decay.
(d) Name two different types of human teeth and their functions.
(a)
Identify the parts labeled P, Q, and R.
3 mk
(b)
State the function of part Q.
1 mk
(c)
Explain the process of tooth decay.
3 mk
(d)
Name two different types of human teeth and their functions.
3 mk
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Section C
9.0 marks
The blood circulation is important for survival of human beings.
(none)
In six points, justify this statement.
0 mk
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10.0 marks
Analyse five factors which affect the rate of respiration in living organisms.
(none)
Analyse five factors which affect the rate of respiration in living organisms.
0 mk
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11.0 marks
You are invited by the ward leader in the nearby village to talk about cholera. Explain six preventive measures of the disease that you would address to the villagers.
(none)
You are invited by the ward leader in the nearby village to talk about cholera. Explain six preventive measures of the disease that you would address to the villagers.
0 mk