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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"
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Total Questions12
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Time Allowed15
Enzymes
00:00
Question # 1
The biochemical reactions in which larger molecules are broken down are called
Question # 2
Enzyme pepsin in the stomach has an optimum pH of about
Question # 3
The active site of an enzyme
Question # 4
Set of biochemical reactions that occur in living organisms in order to maintain life is called.
Question # 5
What is true about cofactors.
Question # 6
Enzymes convert the substrate into different molecules called.
Question # 7
Which best defines an enzyme.
Question # 8
Changes in pH can alter the active site by affecting the
Question # 9
What can happen if an enzyme is exposed to temperature that is highr than its optimal temperature.
Question # 10
Increase or decrease in temperture beyond the optimum temperature will
Question # 11
Prosthetic groups are.
Question # 12
Enzyme are specific in their action becasue.
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.
Top Scorers Of Chapter 7 "Enzymes" MCQ`s Test
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A Ahmaad 14 - Jan - 2025 01 Min 00 Sec 12/12 -
N Nabiha Shahzad 17 - Jan - 2025 01 Min 22 Sec 12/12 -
K Kanwal Jameel 05 - Jan - 2025 01 Min 26 Sec 12/12 -
M M. Abdullah 24 - Dec - 2025 02 Min 33 Sec 12/12 -
S siyyam khan 09 - May - 2026 02 Min 58 Sec 12/12 -
R Rehana Arooj 04 - Sep - 2025 00 Min 52 Sec 11/12 -
M Maria Iram maria 20 - Jan - 2025 01 Min 10 Sec 11/12 -
M Muhamad Afzal Rana 19 - Jan - 2025 01 Min 32 Sec 11/12 -
M MaHnoOR MuHAmMaD 25 - Mar - 2026 01 Min 43 Sec 11/12 -
S Sumreen Hussain 06 - Nov - 2025 02 Min 34 Sec 11/12 -
T Tufail Ahmad 26 - Dec - 2024 02 Min 44 Sec 11/12 -
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L Labeebah Zakir 07 - May - 2026 01 Min 19 Sec 10/12 -
M Mishal Shafaqat 10 - Jan - 2025 01 Min 31 Sec 10/12 -
S Shaheena Hanif 25 - Dec - 2024 01 Min 34 Sec 10/12
9th Class (English Medium) Biology (New Book) Chapter 7 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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.
|
| 2 | Which best defines an enzyme. |
A. A chemical that breaks down food
B. A hormone that regulates metabolism
C. A protein that speeds up reactions
D. A molecule that stores energy
|
| 3 | Primarily, all enzymes are. |
A. Proteins
B. Nucleic acids
C. Carbohydrates
D. Lipids
|
| 4 | Enzyme are specific in their action becasue. |
A. Their active sites fit specific substaratres
B. They are alwyas proteins
C. They are consumed in reactions
D. They work only at high temperatures
|
| 5 | 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
|
| 6 | 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
|
| 7 | 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
|
| 8 | Set of biochemical reactions that occur in living organisms in order to maintain life is called. |
A. Catabolism
B. anabolism
C. Metabolism
D. Mutualism
|
| 9 | Changes in pH can alter the active site by affecting the |
A. Shape of substrate
B. Ionization of amino acids
C. Ionization of cofactor
D. Ionizaation of co enzyme
|
| 10 | 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. |
A. The substrate will become inactive in an acidic environment
B. the enzyme wil gain additional active sites
C. The enzyme will catalyse reactions faster due to increased H ions
D. The activ esite will be modified reducing substrate binding
|
Test Questions
Share your comments & questions here
Guest User
11 Dec 2019Q uestion test kese dete hai
muhammad uzair
08 Dec 2017it is good
ujala
14 Sep 2017good
ujala
08 Sep 2017its a good.it is to helpful for exams preparation