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Biology JAMB Past Questions

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191
Refrigeration, as a method of preservation, has ONE of the following characteristics:
  • A. Kills all the bacteria
  • B. Kill most of the bacteria
  • C. Makes the bacteria inactive
  • D. Dries food
  • E. Hydrolyses food
View Answer & Discuss (4) JAMB 1982
192

Treatment of a poor soil with lime supplies

  • A. Sulphur
  • B. Calcium
  • C. Phosphorus
  • D. Sodium
  • E. Nitrogen
View Answer & Discuss (5) JAMB 1982
193
In the enzyme (amlyase) reactions of starch → sugar
starch is referred to as the
  • A. substrate
  • B. product
  • C. enzyme
  • D. enzyme-substrate complex
  • E. reaction mixture
View Answer & Discuss (5) JAMB 1982
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194
ONE of the major causes of haemophilia is lack of
  • A. firbrinogen
  • B. amylase
  • C. white blood corpuscles
  • D. red blood corpuscles
  • E. plasma
View Answer & Discuss (12) JAMB 1982
195
In man, identical twins occur when
  • A. An ovum is fertilized by a sperm and then divide into two, each forming a separate embryo
  • B. an ovum fertilized by two sperms and then divides into two, each forming an embryo
  • C. two ova are fertilized at the same tine each forming an embryo
  • D. two ova are fertilized by a single sperm each forming an embryo after fertilization
  • E. one ovum first divides into two and each half is fertilized by a sperm before developing into an embryo
View Answer & Discuss (4) JAMB 1982
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