9th Class MCQS

9th Class Biology Chapter 6 MCQs with Answers

Welcome to the 9th Class Biology Chapter 6 MCQs Practice and Quiz Tests. We are presenting you with top MCQ questions from the 9th Class Biology Chapter 6 Enzymes.

You can find all the 9th Class Biology Chapter 6 MCQs online tests on our website. These online tests are great for learning and as well as for scoring maximum marks in your Matriculation Exams. We are making these Class 9 Biology MCQs online tests for those who want full marks in their exams.

9th Class Multiple Choice Question Chapter 6 with Answers Free PDF

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Grade 9 Biology Chapter 6 Online Quiz

By presenting 3 options to choose from, 9th Class Chapter 6 Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of 9th Class Questions and Answers and click over the correct answer.

  • Test Name: 9th Class Chapter 6 Quiz Practice
  • Type: Quiz Test
  • Total Questions: 40
  • Total Marks: 40
  • Time: 40 minutes

Note: Answer of the questions will change randomly each time you start the test. Practice each quiz test at least 3 times if you want to secure high marks. Once you are finished, click the View Results button. If any answer looks wrong to you in Quizzes. simply comment below this post, so that we can update the answer in the quiz section.

9th Class Biology Chapter 6 MCQs

9th Class Biology Ch 6: Enzymes

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1 / 40

What is the function of competitive inhibitors?

2 / 40

What is the function of an enzyme inhibitor?

3 / 40

Which type of enzyme works in both anabolic and catabolic reactions?

4 / 40

What is the term for the product of an enzyme-catalyzed reaction?

5 / 40

Which enzyme is responsible for breaking down nucleic acids into nucleotides?

6 / 40

What is the function of a holoenzyme?

7 / 40

Which enzyme is responsible for breaking down hydrogen peroxide into water and oxygen?

8 / 40

What is the specific region on an enzyme where the substrate binds?

9 / 40

How does an enzyme affect the activation energy of a reaction?

10 / 40

What is the term for the process where an enzyme loses its shape and function due to a change in pH?

11 / 40

What is the role of the active site on an enzyme?

12 / 40

What is the function of coenzymes in enzymatic reactions?

13 / 40

What is the main function of enzymes in biological systems?

14 / 40

What is the role of cofactors in enzyme function?

15 / 40

What is the role of an allosteric site on an enzyme?

16 / 40

What is the term for the substance upon which an enzyme acts and catalyzes a reaction?

17 / 40

Which enzyme is responsible for adding phosphate groups to molecules?

18 / 40

What is the effect of substrate concentration on enzyme activity?

19 / 40

What are enzymes?

20 / 40

Which type of enzyme inhibition involves a molecule binding to an allosteric site, changing the enzyme's shape?

21 / 40

Which enzyme is responsible for joining two molecules together by forming a covalent bond?

22 / 40

Which enzyme is responsible for breaking down starch into maltose?

23 / 40

What is the effect of temperature on enzyme activity?

24 / 40

Which macromolecule category do enzymes belong to?

25 / 40

What is the effect of pH on enzyme activity?

26 / 40

What is the term for the maximum rate of an enzyme-catalyzed reaction?

27 / 40

What is the term for the process where an enzyme loses its shape and function due to extreme pH or temperature?

28 / 40

Which type of enzyme inhibition can be overcome by adding more substrate?

29 / 40

Which type of inhibition involves a molecule binding to the active site, preventing substrate binding?

30 / 40

What is the term for the initial investment of energy required to start a chemical reaction?

31 / 40

What is the role of the Km value in enzyme kinetics?

32 / 40

What is the term for the molecule on which an enzyme acts?

33 / 40

What is the name of the model that describes the interaction between an enzyme and its substrate?

34 / 40

Which enzyme is responsible for breaking down lipids into fatty acids and glycerol?

35 / 40

What is the term for the specific three-dimensional shape of an enzyme's active site?

36 / 40

What is the term for a molecule that increases the rate of an enzyme-catalyzed reaction?

37 / 40

What is the function of the induced fit model in enzyme-substrate interactions?

38 / 40

Which type of inhibition involves a molecule binding to an allosteric site on the enzyme?

39 / 40

Which class of enzymes is responsible for breaking down proteins into amino acids?

40 / 40

Which of the following factors can denature an enzyme?

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