11th Class MCQs

11th Class Biology Chapter 3 MCQs with Answers

Welcome to the 11th Class Biology Chapter 3 MCQs Practice and Quiz Tests. We are presenting you with top MCQ questions from the 11th Class Biology Chapter 3 Enzymes.

You can find all the 11th Class Biology Chapter 3 MCQs online tests on our website. These online tests are great for learning and as well as for scoring maximum marks in your Intermediate Exams. We are making these Class 11 Biology MCQs online tests for those who want full marks in their exams.

11th Class Multiple Choice Question Chapter 3 with Answers Free PDF

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Grade 11 Biology Chapter 3 Online Quiz

By presenting 3 options to choose from, 11th Class Biology Chapter 3 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 11th Class Questions and Answers and click over the correct answer.

  • Test Name: 11th Class Biology Chapter 3 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.

11th Class Biology Chapter 3 MCQs

11th Class Biology Chapter 3: Enzymes

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1 / 40

What is the effect of increasing substrate concentration on enzyme activity in a non-saturated system?

2 / 40

Enzymes are specific to their substrates due to ____________.

3 / 40

What is the effect of increasing substrate concentration on enzyme activity in a saturated system?

4 / 40

What is the name of the model that describes enzyme-substrate interactions as induced fit?

5 / 40

What is the name of the model that describes enzyme-substrate interactions as a rigid lock-and-key fit?

6 / 40

Enzymes function by ____________ substrates into products.

7 / 40

What type of enzyme inhibition occurs when the inhibitor binds to a site other than the active site, altering the enzyme's shape?

8 / 40

What is the term for the substance that inhibits an enzyme by binding to the active site?

9 / 40

What happens to enzyme activity at extreme temperatures?

10 / 40

What is the function of coenzymes in enzyme-catalyzed reactions?

11 / 40

Enzyme activity is typically highest at the ____________ temperature for that enzyme.

12 / 40

Which of the following is NOT a type of enzyme inhibition?

13 / 40

Which of the following factors can affect enzyme activity?

14 / 40

Which of the following is NOT a type of enzyme inhibition?

15 / 40

In competitive inhibition, the inhibitor molecule binds to the ____________.

16 / 40

Which of the following is NOT a factor that can denature enzymes?

17 / 40

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

18 / 40

Enzymes are typically named by adding the suffix ____________ to the substrate they act upon.

19 / 40

Enzymes speed up chemical reactions by _____________.

20 / 40

Enzymes can be denatured by ____________.

21 / 40

What is the effect of increasing substrate concentration on enzyme activity in a non-saturated system?

22 / 40

Which of the following is NOT true about enzyme kinetics?

23 / 40

Which of the following is NOT a characteristic of enzyme catalysis?

24 / 40

Non-competitive inhibition involves the inhibitor binding to the enzyme at the ____________.

25 / 40

The substance upon which an enzyme acts is called the ____________.

26 / 40

Which of the following statements about enzyme-substrate complexes is true?

27 / 40

Enzyme activity is typically highest at the ____________ pH for that enzyme.

28 / 40

Which of the following is NOT a type of enzyme inhibition?

29 / 40

What is the effect of increasing substrate concentration on enzyme activity in a saturated system?

30 / 40

The rate at which an enzyme catalyzes a reaction can be affected by ____________.

31 / 40

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

32 / 40

Enzymes are ____________.

33 / 40

What is the name of the model that describes enzyme-substrate interactions as induced fit?

34 / 40

The specific region of an enzyme where substrates bind is called the ____________.

35 / 40

The Michaelis constant (Km) is a measure of the ____________.

36 / 40

The rate of an enzyme-catalyzed reaction increases with ____________.

37 / 40

What is the main function of enzymes in biological systems?

38 / 40

Enzyme activity is affected by ____________.

39 / 40

Enzymes lower the activation energy required for a chemical reaction to proceed by ____________.

40 / 40

Which of the following is NOT true about enzyme-substrate complexes?

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