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Biology 2010 WAEC Past Questions

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26
A man suffering from obesity must avoid meals containing
  • A. margarine and butter
  • B. rice and beans
  • C. carrots and oranges
  • D. beef and fish
View Answer & Discuss WAEC 2010
27
In testing for starch in a leaf, the leaf is first boiled in water for about a minute so that the
  • A. cell walls are hardened
  • B. cells are killed
  • C. chlorophyll is dissolved out
  • D. iodine will penetrate
View Answer & Discuss (1) WAEC 2010
28

Which of the following food substances is incorrectly linked to its enzyme?

  • A. Protein - trypsin
  • B. Fat - lipase
  • C. Sucrose - pepsin
  • D. Starch - amylase
View Answer & Discuss (3) WAEC 2010
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29

Which of the following pH values is the best for the action of the enzymes - renin and pepsin in the
stomach?

  • A. pH2
  • B. pH7
  • C. pH8
  • D. pH9
View Answer & Discuss (5) WAEC 2010
30

The bacterium in a mutualistic association with legumes converts

  • A. nitrates to ammonia
  • B. ammonium compounds to nitrites
  • C. nitrogen gas to ammonia
  • D. nitrites to nitrates
View Answer & Discuss (2) WAEC 2010
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