Punjab 11th Class Biology Chapter 3 Enzymes Mcqs Test Online

Total Question
13 Questions
Total Marks
26 Marks
Total Time
13 Minuts
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Test Name



Ch. 3 # Enzymes

Subject



Biology (11th Class)

Test Type



Mcqs


Punjab 11th Class Biology Chapter 3 Enzymes Mcqs Test Online

Biology Chapter 3 Enzymes Mcqs Test Online 11th Class Punjab

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Question 1 of 13

Biology

1. The graph shows the effect of an enzyme on a reaction.

Which combination identifies X, Y and Z?

X                                                  Y                          Z
ACatalyzed reactionUncatalyzed reactionActivation energy
BCatalyzed reactionUncatalyzed reactionEnergy lost during reaction
CUncatalyzed reactionCatalyzed reactionEnergy gained by product
DUncatalyzed reactionCatalyzed reactionOverall energy change

Question 1 of 13

Question 2 of 13

2. Non-competitive inhibitors react with enzymes at:

Question 2 of 13

Question 3 of 13

3. The reaction rate of salivary amylase with starch decreases as the concentration of chloride ions is reduced. Which of the following describe the role of the chloride ions?

Question 3 of 13

Question 4 of 13

4. How does an enzyme increase the rate of a reaction?

Question 4 of 13

Question 5 of 13

5. The catalytic activity of an enzyme is restricted to its small portion called:

Question 5 of 13

Question 6 of 13

6. Which of the following has a coenzyme activity?

Question 6 of 13

Question 7 of 13

7. Combination of apoenzyme and coenzyme produces:

Question 7 of 13

Question 8 of 13

8. Ribozymes consist of:

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Question 9 of 13

9. The specificity of enzyme is due to their:

Question 9 of 13

Question 10 of 13

10. Erypsin is an example of?

Question 10 of 13

Question 11 of 13

11. Which graph shows the expected relationship between enzyme activity and substrate concentration?

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Question 11 of 13

Question 12 of 13

12. A essential feature of a competitive inhibitor is its ability to:

Question 12 of 13

Question 13 of 13

13. Many enzymes are secreted in inactive form to protect

Question 13 of 13


 

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