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Biology 2000 WAEC Past Questions

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16
When a mammal respires anaerobically for a long time
  • A. pyruvic acid is convened into acetyl COA
  • B. more energy is released from fats in the body
  • C. lactic acid accumulates in the muscles
  • D. the Krebs cycle is fully completed.
View Answer & Discuss (9) WAEC 2000
17
Which of the labelled structures in the diagram are involved with the entry
of carbondioxide for photosynthesis?
  • A. I, II and III only
  • B. I, II, III and VI
  • C. I, II, V and VI
  • D. I, II, III, and IV
View Answer & Discuss (3) WAEC 2000
18
Which of the labelled structures in the diagram will shrink when plasmolysis
occurs?
  • A. I
  • B. II
  • C. III
  • D. IV
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19
The condition shown in the above diagram is due to
  • A. conversion of starch to sugar
  • B. conversion of sugar to starch
  • C. excess water in structure labelled I
  • D. presence of carbondioxide in the structure labelled I
View Answer & Discuss WAEC 2000
20
Which of the following solutions will induce the condition shown in the diagram?
  • A. Hypertonic solution
  • B. Hypotonic solution
  • C. isotonic solution
  • D. Distilled water.
View Answer & Discuss (1) WAEC 2000
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