Punjab 11th Class Biology Chapter 3 Enzymes Mcqs Test Online
Questions 13
Total Marks 26
Time 13 Mins
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Punjab 11th Class Biology Chapter 3 Enzymes Mcqs Test Online

Start your preparation for Punjab 11th Class Biology Chapter 3 Enzymes Mcqs Test Online. This online test contains 13 MCQs and you have 13 Minutes to complete it. The total marks for this test are 26. This test is valid for students of All Punjab Boards (Lahore, Gujranwala, Multan, etc.) following the PCTB Syllabus. Read the questions carefully and select the correct option below to see your result.

Biology Chapter 3 Enzymes Mcqs Test Online 11th Class Punjab

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Question 1 of 13

Biology

1. 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 1 of 13

Question 2 of 13

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

Biology 3.02Which 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 2 of 13

Question 3 of 13

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

Question 3 of 13

Question 4 of 13

4. Erypsin is an example of?

Question 4 of 13

Question 5 of 13

5. The specificity of enzyme is due to their:

Question 5 of 13

Question 6 of 13

6. Non-competitive inhibitors react with enzymes at:

Question 6 of 13

Question 7 of 13

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

Question 7 of 13

Question 8 of 13

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

Biology 3.0osoioi

Question 8 of 13

Question 9 of 13

9. Many enzymes are secreted in inactive form to protect

Question 9 of 13

Question 10 of 13

10. Combination of apoenzyme and coenzyme produces:

Question 10 of 13

Question 11 of 13

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

Question 11 of 13

Question 12 of 13

12. Which of the following has a coenzyme activity?

Question 12 of 13

Question 13 of 13

13. Ribozymes consist of:

Question 13 of 13


 

Guide for Punjab Board Students

Students of BISE Lahore, Gujranwala, Multan, and other Punjab boards must follow the SLO based pattern.

Top Scoring Tips for Punjab:

  • Textbook Reading: The paper is 100% derived from PCTB books. Do not rely only on keybooks.
  • Objective Paper (20%): Practice these online MCQs repeatedly as they are taken from 5-Year Past Papers.
  • Bubble Sheet: Ensure you know how to fill the OMR sheet correctly.

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