MID TERM TEST FIRST TERM SS 3 BIOLOGY

FIRST TERM EXAMINATION 

Class:  S.S.S 3   Subject: BIOLOGY         Time:  

`     Answer all question in this section

1. A person had an accident that affected the skull but not the nose and later lost the sense of smell. The accident must have affected the (a) Nose by extension (b) Olfactory lobes of the brain (c) Passages from the nose to the brain (c) Passage from the nose to the brain (d) Part of the skull near the nose 
2. The advantages of sexual reproduction include the following except (a) it allow the formation of new species (b) It allow production of desirable traits (c) it provides means for the variation of chromosomes number from generation to generation 
3. Short- sight could be corrected with the use of (a) convex lens (b) Cylindrical lens (c) Concave lens (d) Bifocal lens
4. In which of the following processes is  light energy converted to ATP (a) Osmosis (b) transpiration (c) Chemosynthesis (d) Photosynthesis 
5. Which of the following organism is chemo-autotrophy? (a) Virus (b) Bacteria (c) Paramecium (d) Euglena 
6. A person who fails to detect the bitter taste of a substance swallowed, is more likely to have (a) Dead taste budson the tongue (b) Avoided the substance from contacting the back of his/her tongue (c) Fewer taste buds on the tongue (d) swallowed the substance without any water 
7. When a person moves from a darkroom into bright light, the pupil becomes (a) Red (b) Larger (c)White (d) Smaller 
8. Sickle-cell anemia has persisted in the human race due to (a) Lack of proper medical care for sicklers (b) Carriers being more resistant to malaria (c) Mosquito vector (d) Wild life intermediate hosts
9.  The nucleus control the activities of the cell because it (a) Synthesis hormones (b)is like a brain in the cell (c)Uses DNA to synthesize enzymes which are used in metabolism (d) send out nervous impulses to ensure the functioning of the cytoplasm 
10. The drug which inhibit the growth of disease causing organism and thus used in the treatment of infections are referred to as (a) antibodies (b) antibiotics (c)antitoxic (d)septics
11. The role of ATP include all the following activities except (a)Provision of energy to do work in living organism (a) Transmission of nerve impulse (c)keeping body warm in homoeothermic animals  (d)producing water during aerobic respiration 
12. Which of the following glands secretes a substance into the blood stream of a frightened person (a) Adrenal glands (b) salivary glands (c) Gastric glands (d) Parathyroid glands 
13. When both ovaries of the human female ovulate simultaneously and both ova are fertilized then (a) Identical twins are produced (b) Fraternal twins are produced (c) Siamese twins are produced (d) The children are produced genetically identical 
14. Which of the following juices contains the enzymes ptyalin? (a) Gastric juice (b) Pancreatic juice (c) Succus (d) Saliva 
15. The transfer of ripe pollen grains from the anther to the stigma of the same flower is termed (a) Fertilization (b)Self- pollination (c)Reproduction (d) Conjugation 
16. Which of the following sensation may not be detected by the skin (a) Touch (b)Pressure (c)Stress (d)Pain
17. The part of the brain which control and coordinate body posture is the (a)Cerebellum (b)Hypothalamus (c)Medulla (d)Pons varolli 
18. A man suffering from obesity must avoid meals containing (a) Margarine and butter  (b) rice and beans (c)Carrots and oranges (d) Beef and fish 
19. Which of the following parts of the eyes contain light sensitive cells (a) Choroid (b) Iris (c) Retina (d) Lens 
20. The hair on the human skin will stand erect when the person is (a) In an air-conditioned room (b)Strolling in the sun (c) Taking a hot drink (d) Doing strenuous exercise 

SECTION B

Answer any 5 questions in this section

1a. Explain briefly the process involved in perception of smell 

1b.List the three ways of caring for the mammalian skin 

1c. List two stimuli to which the mammalian skin is sensitive 

2a. Make a diagram, 8cm-10cm long, of the male reproductive system and label fully 

2b. Explain the following 

1. Asexual reproduction 
2. Sexual reproduction 

2c. Define reproduction 

3a. What is a sense organ? 

3b. Describe the process that will cause a person who has been spinning to feel dizzy 

3c. List two sense organs found in mammals 

4. Make a diagram, 10cm-12cm long, of the mammalian ear. Hence, explain the mechanism of hearing 
5. With the aid of diagram, explain kreb`s cycle.
6. Explain biology under the following headings 
7. History
8. Branches (the major one) 
9. List two usefulness of science 
10. Define science 

SECTION B

Answer any 5 questions in this section

1a. Explain briefly the process involved in perception of smell 

1b.List the three ways of caring for the mammalian skin 

1c. List two stimuli to which the mammalian skin is sensitive 

2a. Make a diagram, 8cm-10cm long, of the male reproductive system and label fully 

2b. Explain the following 

1. Asexual reproduction 
2. Sexual reproduction 

2c. Define reproduction 

3a. What is a sense organ? 

3b. Describe the process that will cause a person who has been spinning to feel dizzy 

3c. List two sense organs found in mammals 

4. Make a diagram, 10cm-12cm long, of the mammalian ear. Hence, explain the mechanism of hearing 
5. With the aid of diagram, explain kreb`s cycle.
6. Explain biology under the following headings 
7. History
8. Branches (the major one) 
9. List two usefulness of science 
10. Define science