9th Class Biology Chapter 7 English Medium Online MCQ Test With Answer

All the students of class 9th are invited here. We are providing the 9th class biology ch7 MCQs solved on our website. You can get the benefit from these MCQs by downloading the pdf file, which is available on this page. It enables you to practice a large number of questions in a relatively short period of time; practicing MCQs through a PDF might be a helpful way to get ready for tests. MCQs are a helpful way to assess how well you understand a subject. Additionally, we are not only providing the MCQs of Biology but also the past papers, 9th class video lectures, and many other resources on our website.

MCQ's Test For Chapter 7 "Enzymes"

Try The MCQ's Test For Chapter 7 "Enzymes"

  • Total Questions12

  • Time Allowed15

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Enzymes

00:00
Question # 1

Which best defines an enzyme.

Question # 2

The catalytic region on enzyme recognizes and binds the substrate and carries the reaction. This region is called as.

Question # 3

Enzymes convert the substrate into different molecules called.

Question # 4

An enzyme works best at a pH of 7.4. It is places in an acidic solution with a pH of 4.0.How will this affect the enzyme.

Question # 5

Changes in pH can alter the active site by affecting the

Question # 6

Enzyme pepsin in the stomach has an optimum pH of about

Question # 7

The biochemical reactions in which larger molecules are synthesized are called.

Question # 8

What is true about cofactors.

Question # 9

Prosthetic groups are.

Question # 10

If you add more substrate to already occurrig enzymatic reaction and it has no effet on the rate of reaction. What is the form given to this situation.

Question # 11

Increase or decrease in temperture beyond the optimum temperature will

Question # 12

Whcih does yield energy.

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MCQs Test of 9 th Class Biology Chapter 7

These MCQs tests along with answers can also be downloaded in pdf files for offline preparation. You can attempt these important tests anytime and anywhere on any device. These important online tests are provided to the students without any charges. 9 th class biology chapter 7 MCQs with answers is carefully prepared by our experienced staff. If you practice these tests then you can successfully attempt your board exam. The correct answers of all MCQs are given in the end of test. You can download 9 th class biology chapter 7 MCQs pdf and can save them. This online session is perfect for the preparation of 9 th class biology chapter 7. For the students of 9 th class, past papers and guess papers are also given on ilmkidunya. Make sure your better preparation by this important MCQs tests.

MCQs of Chapter 7, ENZYMES

The Biology 9th class Chapter 7 MCQs are prepared to help students understand the key concepts of “Enzymes.” This chapter explains what enzymes are, how they work as biological catalysts, and their role in speeding up chemical reactions in living organisms. By practicing these MCQs, students can strengthen their knowledge about enzyme action, factors affecting enzyme activity, and the importance of enzymes in different biological processes. These MCQs will make exam preparation easier and give a better grip on the objective part of the paper.

How to Practice the MCQs Online?

Students of class 9th can practice by solving the Chapter 7 biology 9th class important MCQs that are mentioned on this page. As you know, Multiple Choice Questions (MCQs) play a vital role in exams, and you have to solve all of them. So, from our website, you can appear in the online test session. After submitting the test, you will be able to get the final result of the MCQs. There will be a total of 12 MCQs that you have to solve in 15 minutes. These MCQs will surely help you in your tests or exams.

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9th Class (English Medium) Biology (New Book) Chapter 7 Important MCQ's

Sr.# Question Answer
1 The biochemical reactions in which larger molecules are synthesized are called.
A. Anabolism
B. Catabolism
C. Metabolism
D. Digestive reactions
2 The catalytic region on enzyme recognizes and binds the substrate and carries the reaction. This region is called as.
A. Cofactor
B. Active sites
C. Activator
D. Inhibitor
3 What can happen if an enzyme is exposed to temperature that is highr than its optimal temperature.
A. Enzyme activity rate will increase
B. Enzyme's shape will change potentially reducing its activity
C. Enzyme will speed up the reaction and remain stable
D. Enzyme will become a substrate itself
4 Enzymes convert the substrate into different molecules called.
A. Product
B. Reactants
C. Inhibitors
D. Biomolecules
5 What is true about the optimun pH values of the followign enzyes of digestive system.
A. Both work at high pH
B. Both work at low pH
C. Pepsin works at low pH while trypsin works at high pH
D. Pepsin works at high pH while trypsin works at low pH
6 How does increasing temperatue affect enzyme activity.
A. Increase actiity to a point
B. Always decreases activity
C. Makes enzymes non functional
D. No effect on enzyme
7 If you add more substrate to already occurrig enzymatic reaction and it has no effet on the rate of reaction. What is the form given to this situation.
A. Denaturation
B. Saturation
C. Desaturation
D. Inhibition
8 How does competitive inhibitor affect enzyme action
A. attaches with the substrate
B. Changes enzyme shape
C. Attaches and blocks the active site
D. Blocks the cofactors
9 Enzyme pepsin in the stomach has an optimum pH of about
A. 3
B. 2
C. 4
D. 5
10 What is TRUE . according to the induced fit model of enzyme action.
A. Enzyme's active site change shape to bind the substrate.
B. Substrate must fit the enzyme perfectly before binding
C. No shape changes occur durring binding
D. Enzyme is inactivated during the process.

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