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Biology Past Questions and Answers

Topic: Animal nutrition

Jamb Biology Questions - Animal nutrition

Question 71:
How does an enzyme affect the rate of a reaction?
  • A It lowers the activation energy of the reaction, increasing the reaction rate.
  • B It raises the activation energy of the reaction, decreasing the reaction rate.
  • C It lowers the activation energy of the reaction, decreasing the reaction rate.
  • D It raises the activation energy of the reaction, increasing the reaction rate.
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Question 72:
The four classes of cnidarian include the following except
  • A Turbellaria
  • B Anthozoa
  • C Scyphozoa
  • D Cubozoa
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Question 73:
The vitamin which is important in the formation of the retina pigment is
  • A Vitamin A
  • B Vitamin B
  • C Vitamin C
  • D Vitamin D
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Question 74:
Which of the following substances has the highest amount of energy in joules per unit weight?
  • A Carbohydrates
  • B Fats
  • C Proteins
  • D Vitamins
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Question 75:
Which of the following juices contains the enzyme ptyalin?
  • A Gastric juice
  • B Succus
  • C Pancreatic juice
  • D Saliva
View Answer & Explanation