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Biology 1990 WAEC Past Questions

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21
The mechanism by which useful materials in the glomerular filtrate are taken back into the blood is known
as
  • A. filtration
  • B. reabsorption
  • C. haemolysis
  • D. osmosis
  • E. dialysis
View Answer & Discuss WAEC 1990
22
Which of the following takes place during the process of detoxication in the liver?
  • A. Poisonous substances in the body are converted into harmless substances
  • B. Fats and oils are broken into finer particles through emulsification
  • C. Excess glucose in the blood are converted into glycogen and stored
  • D. Worn- out red blood cells are broken down
  • E. Enough heat is generated to sustain the activities of the liver
View Answer & Discuss WAEC 1990
23
The cup-shaped part of the Bowman’s capsule contains
  • A. nephridium
  • B. glomerulus
  • C. loop of Henle
  • D. nephron
  • E. convoluted tubule
View Answer & Discuss (1) WAEC 1990
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24
The increase in width of blood vessels in the mammalian skin at high temperatures is known as
  • A. vasodilation
  • B. sweating
  • C. vasoconstriction
  • D. shivering
  • E. evaporation
View Answer & Discuss (2) WAEC 1990
25
The condition known as cretinism is caused by the deficiency of
  • A. adrenalin
  • B. vitamin A
  • C. insulin
  • D. thyroxin
  • E. vitamin C
View Answer & Discuss (1) WAEC 1990
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