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Biology Past Questions

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2541
Yeast is added to the dough during the preparation of bread because it produces
  • A. ethanol
  • B. heat
  • C. carbon dioxide
  • D. carbohydrate
View Answer & Discuss (3) WAEC 2007
2542
Growth includes the following processes except
  • A. differentiation
  • B. enlargement
  • C. mitosis
  • D. meiosis
View Answer & Discuss (2) WAEC 2007
2543
Which of the following processes is a form of sexual reproduction?
  • A. Budding by yeast cells
  • B. Conjugation in Spirogyra
  • C. Binary fission in Amoeba
  • D. Rhizome production by ginger
View Answer & Discuss WAEC 2007
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2544
The fine adjustment of the light microscope is used to
  • A. admit more light into the microscope
  • B. focus the object under low power
  • C. focus the object under high power
  • D. raise the stage upwards
View Answer & Discuss (3) WAEC 2007
2545
Which of these statements about white blood cells is true? They
  • A. aid clotting of blood
  • B. carry oxygen round the body
  • C. are the most numerous blood cells
  • D. are large nucleated cells
View Answer & Discuss WAEC 2007
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