Cameroon GCE O Level 2015 Biology 1 past Question Paper (Biology 510 GCE Board)

CAMEROON GENERAL CERTIFICATE OF EDUCATION BOARD
General Certificate Of Education Examination
510 BIOLOGY 1 JUNE 2015 ORDINARY LEVEL
KAMERPOWER.COM

Cameroon GCE O Level 2015 Biology 1 past Question Paper (Biology I 510 GCE Board)

Mobile phones are NOT allowed in the examination room
(MCQ) MULTIPLE CHOICE QUESTION PAPER
One and a half hours

INSTRUCTIONS TO CANDIDATES

Read the following instructions carefully before you start answering the questions in this paper. Make sure you have a soft HB pencil and an eraser for this examination.

1. USE A SOFT HB PENCIL THROUGHOUT THE EXAMINATION.
2. DO NOT OPEN THIS BOOKLET UNTIL YOU ARE TOLD TO DO SO.
   Before the examination begins:
3. Check that this question booklet is headed “Ordinary Level – 510 Biology 1‘”
4. Fill in the information required in the spaces above.
5. Fill in the information required in the spaces provided on the answer sheet using your HB pencil:
   Candidate Number and Name, Centre Number and Name.
   Take care that you do not crease or fold the answer sheet or make any marks on it other than those asked for in these instructions.
   How to answer the questions in this examination
6. Answer ALL the 50 questions in this Examination. All questions carry equal marks.
7. Calculators are allowed.
8. Each question has FOUR suggested answers: A, B, C and D. Decide on which answer is correct. Find the
   number of the question on the Answer Sheet and draw a horizontal line across the letter to join the square
   brackets for the answer you have chosen. kamerpower.comFor example, if C is your correct answer, mark C as shown below: 
   [A] [B] [C] [D]
9. Mark only one answer for each question. If you mark more than one answer, you will score a zero for that
   question. If you change your mind about an answer, erase the first mark carefully, then mark your new
   answer.
10. Avoid spending too much time on any one question. If you find a question difficult, move on to the next question. You can come back to this question later. kamerpower.com
11. Do all your rough work in this booklet, using, where necessary, the blank spaces in the question booklet.
12. At the end of the examination, the invigilator shall collect the answer sheet first and then the question
    booklet after. DO NOT ATTEMPT TO LEAVE THE EXAMINATION HALL WITH IT.

SECTION I

Questions 1-7 (Seven questions)

Directions: Each of these questions or incomplete statements is followed by four suggested answers. Select the best answer in each case and mark the answer sheet appropriately. kamerpower.com

1. Upon oxidation, which food sample will generate the largest amount of energy?
   A: Glycogen
   B: Starch
   C: Fat
   D: Proteins
2. Anaerobic respiration of yeast in a solution of sugar is known as
   A: Reduction
   B: Oxidation
   C: Decomposition
   D: Fermentation
3. Solar energy is converted to chemical energy by:
   A: Producers
   B: Herbivores 
   C: Decomposers
   D: Consumers
4. Which of the following formulae represent glucose?
   A: C₆H₁₂O₆  
   B: C₂H₅OH
   C: C₁₂H₂₂O₁₁
   D: C₅₇H₁₀₄O₆
5. Both leaf cuticle and insect exoskeleton
   A: Provide camouflage
   B: Contain sensory cells
   C: Assist in respiration
   D: Reduce water loss
6. Which of the following structures is a protective adaptation of the Agama lizard in a terrestrial habitat?
   A: Claws
   B: Gular fold
   C: Scaly skin
   D: Nuchal crest.
7. The hormone insulin is produced by
   A: Liver
   B: Kidney
   C: Stomach
   D: PancreasSECTION II
   Questions 8-20 (Thirteen questions)
   
   Directions: This group of questions relates to biological diagrams. Select the best answer for each question.
8. Below is the diagram of the longitudinal section of the kidney
   
   Bowman’s capsules are located in the part labelled
   A: 6
   B: 5
   C: 4
   D: 1
   
9. Where does ultra filtration take place in the kidney?
   A: Glomerulus
   B: Bowman’s capsules
   C: Proximal convoluted tubules
   D: Collecting duct
10. The diagram below is that of the longitudinal section of a hibiscus flower.
    
    Which part of the above diagram becomes the seed after fertilization?
    A: Ovary
    B: Stigma
    C: Ovule
    D: Sepal
11. Below is the diagram of a motor neuron:
    
    The cell body consists of
    A: 1 and 3
    B: 1 and 2
    C: 1 and 4
    D: 1 and 5
12. Which structure in the vertical section of the a mammalian eye contains a high concentration of cones?
    A: Sclera
    B: Fovea
    C: Choroid
    D: Blind spot
13. The diagram below represents the feeding relationship in an ecosystem.
    
    Which level of the pyramid has the least total stored energy?
    A Shark
    B: Tilapia
    C: Tadpole
    D: Algae
14. The function of the structure labeled T on the diagram below is to?
    
    A: Transport amino acid and glucose.
    B: Transport fatty acids and glycerol or fats
    C: Transport absorbed amino acids
    D: Transport absorbed glucose
    
15. Which of the following is a hinge joint?
    A: Knee joint
    B: Shoulder joint
    C: Wrist joint
    D: Ankle joint
    
16. Which part of the brain is concerned with the regulation of heart beat and breathing rate in humans?
    A: Cerebellum
    B: Cerebrum
    C: Medulla oblongata
    D: Hypothalamus
    
17. The structure that separates the mammalian heart into two parts is?
    A: Bicuspid valve
    B: Tendon
    C: Tricuspid valve
    D: Septum
    
18. The part of the leaf containing numerous chloroplasts is?
    A: Spongy mesophyll
    B: Upper epidermis
    C: Palisade layer
    D: Lower epidermis
    
19. The structure that prevents water evaporation from the cells of the spirogyra
    A: Cell wall
    B: Mucilage
    C: Cell membrane.
    D: Vacuole
    
20. Below is the diagram of a bread mould.
    
    The structure numbered 2 is called?
    A: Stolon
    B: Hypha
    C: Mycelium
    D: SporangiophoreSECTION III (Five questions) Questions 21-25
    
    Directions: For each of the questions below, ONE or MORE of the responses is (are) correct. Decide which of the responses is (are) correct. Then choose:A: If 1, 2 and 3 are all correct.
    B: If 1 and 2 only are correct.
    C: If 2 and 3 only are correct.
    D: If 1 only is correct.
    
    
21. Menopause is a condition in female mammals. In this condition,
    1: The female stops ovulating
    2: The female can no longer become pregnant
    3: The menstrual cycle continues
    
22. Arteries differ from veins in that
    1: Arteries have thick elastic walls
    2: Arteries have large lumen
    3: Arteries have valves
    
23. The structures of a plant cell absent in an
    animal cell
    1 Chloroplast and cell membrane
    2 Chloroplast and cell wall
    3 Chloroplast and starch grains
    
24. Platelets play a role in
    1 Causing haemorrhage
    2 Blood clotting
    3 Blocking holes in damaged capillary walls
    
25.  Plasmolysis occurs when
    1 The cell is placed in a hypertonic solution
    2 Water is drawn from the vacuole
    3 The cell is placed in a hypotonic solutionSECTION IV
    (Five Questions) Questions 26-30Directions: Each of the following questions consists of a statement in the left-hand column followed by a second statement in the right-hand column.Decide whether the first is true or false.
    Decide whether the second is true or false.
    Then, on the answer sheet mark as shown in the table below:
    
26. Deforestation leads to global warming.Lack of vegetation increases carbon dioxide concentration in the atmosphere.
27. Denitrification deprives plants of nitrates.Denitrification releases Nitrogen from the soil.
28. Saprophytic bacteria help in the decay of dead plants and animals.Saprophytic bacteria reduce soil fertility.
29. Phagocytic white blood cells contribute to body defence.Phagocytes engulf bacteria forming food vacuoles.
30. Insects undergo metamorphosis.The housefly undergoes incomplete metamorphosis.SECTION V
    Questions 31-40 (Ten questions)Directions: Each question consists of four lettered headings A, B, C, D. Select the heading which is closely related to the description which follows.
31. 
    A: Restriction enzyme
    B: Ligase enzyme
    C: Vector
    D: Clone
    Joins DNA pieces to form recombinant DNA.
32. 
    A: Population
    B: Community
    C: Ecosystem
    D: Colony
    A group of organisms of different species living together.
33. 
    A: Carbon monoxide
    B: Carbon dioxide
    C: Sulphur dioxide
    D: Nitrogen dioxide
    Promotes green house effect.
    
34. 
    A: Transpiration
    B: Excretion
    C: Evaporation
    D: Guttation
    Loss of water vapour by plants.
    
35. 
    A: Rennin
    B: Maltase
    C: lactase
    D: Sucrase
    Absent in adult mammals.
    
36. 
    A: Axon
    B: Dead-rite
    C: Dendron
    D: Neuron.
    The functional unit of the nervous system.
    
37. 
    A: Heterozygous tall pea plant and homozygous dwarf pea plant.
    B:  Heterozygous tall pea plant.
    C: Homozygous dwarf pea plant.
    D: Homozygous tall pea plant and heterozygous tall pea plant
    What will be the result of crossing a homozygous tall pea plant and a heterozygous tall pea plant?
    
38. 
    A: Triceps and biceps.
    B: Striated and skeletal
    C: Skeletal and smooth.
    D: Smooth and striated.
    Are antagonistic muscles.
    
39. 
    A: Salivary gland.
    B: Pituitary gland.
    C: Thyroid gland.
    D: Adrenal gland.
    Secretes antidiuretic hormone.
    
40. 
    A: Vitamin C and Iron.
    B: Vitamin D and Magnesium.
    C: Vitamin D and Calcium.
    D: Vitamin A and Calcium.
    Are required for teeth and bone formation.SECTION VI
    Questions 41-50 (Ten questions)
    
    Directions: This group of questions deals with biological situations. Each situation is followed by a set of questions. Select the best answer for each question.
41. Below is an experiment on photosynthesis.
    
    How can you test the gas released in this experiment?A: It turns lime water milky
    B: It has no effect on lime water
    C: It is readily absorbed by pyrogallic acid.
    D: It rekindles a glowing splint.
42. Below is a set up for an experiment on respiration.
    
    The paraffin oil,
    A: Prevents entry of atmospheric oxygen
    B: Prevents entry of atmospheric nitrogen
    C: Prevents evaporation of glucose suspension.
    D: Prevents entry of atmospheric carbon dioxide.
    
43. The following results were obtained during an investigation on the action of salivary amylase on the digestion of starch
    
    From the above results, the optimum temperature for the reaction is
    A: 15
    B: 30
    C: 45 
    D: 37
44. A seedling transplanted on a hot, windy day withers
    A: Because the air is dry.
    B: Because the seedling looses more water than it can absorb.
    C: Because wind carries the water faster.
    D: Because the roots have not adequately penetrated the soil.
45. A bean seedling was placed in such a way that the auxins migrated to the lower side of the root and shoot. What is the effect of the high auxin concentration on the shoot?
    A: Retards growth.
    B: Causes the shoot to grow toward the soil.
    C: Promotes faster growth.
    D: Causes the shoot to bend away from light.
46. This question refers to the graph below.
    Assuming that the normal level of lactic acid in blood is 2omg/cm3 of blood. How long did it take to return to normal?
    A: 40 minutes
    B: 45 minutes
    C: 55 minutes
    D: 50 minutes
47. If the total amount of energy from the sun is estimated at 10485KJ and only 10% is used by the producers. What amount of energy is received by the producers?
    A: 104850KJ
    B: 10485KJ
    D: 104.85KJ
    D: 1048.5KJ
    
48. The experiment below was used to test for the presence of starch in a leaf. Why is the leaf boiled in alcohol in the above experiment?
    
    A: to make the leaf soft and brittle.
    B: to remove chlorophyll from the leaf.
    C: to burst open the starch grains on the leaf.
    D: to make the leaf brittle and hard.
    
49. Which of the following reagents will stain pink red when mixed with groundnut oil?
    A: Benedict’s solution
    B: Fehling’s solution
    C: Sudan III
    D: Millon’s reagent
    
50. What colour will be observed when Fehling’s solution is added to ground germinating maize seed paste and heated?
    A: Blue
    B: Purple
    C: Brick rcd
    D: Violet.
    

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Cameroon GCE O Level 2015 Biology 1 past Question Paper (Biology I 510 GCE Board)