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6th Chapter

9th class Biology Chapter 6 (English Medium)

Here you can prepare 9th Biology English Medium Chapter 6 Enzymes Test. Click the button for 100% free full practice test.

Matric Part 1/9th Class Biology Chapter 6 MCQ Test With Answer for Chapter 6 Enzymes

Matric Part 1/9th Class Biology Chapter 6 MCQ Test With Answer for Chapter 6 Enzymes

Sr. # Questions Answers Choice
1 Which one of the following is specific in action ?
  • A. Catalyst
  • B. Enzyme
  • C. Both
  • D. None
2 Enzymes are ............. catalysts.
  • A. Inorganic
  • B. Organic
  • C. Both a & b
  • D. None
3 Anabolism constitute ................ processes.
  • A. Construction
  • B. Destruction
  • C. Both a & b
  • D. None
4 When we add more substrate to an already occuring enzymatic reaction and there is no increase in the rate of reaction, what would you predict?
  • A. All actives sites have been occupied by substrate molecules
  • B. The enzyme molecule have denatured
  • C. More substrate acted as inhibitor
  • D. More substrate has disturbed has disturbed the pH of the medium
5 Lock and key model was proposed by ................. .
  • A. Emil Fisher
  • B. Koshland
  • C. Freitz London
  • D. None
6 Enzymatic reactions are _______ of times faster than uncatalyzed reactions:
  • A. Millions
  • B. Hundreds
  • C. Thousands
  • D. Billion
7 Which one of the following convert protein to amino acids?
  • A. Protease
  • B. Lipase
  • C. Both
  • D. None
8 The substance on which an enzyme act is called:
  • A. Cofactor
  • B. Inhabitor
  • C. Coenzyme
  • D. Substrate
9 Activation energy is required to:
  • A. Activation enzyme
  • B. Start a reaction
  • C. Speed up a reaction
  • D. None
10 Which of the following variable is least likely to affect an enzymes rate of reaction?
  • A. Temperature
  • B. pH
  • C. Carbon dioxide concentration
  • D. Enzyme concentration

Top Scorers of 9th Class Biology Chapter 6 Enzymes English Medium KPK Boards Online Mcqs

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