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11th Class Biology MCQs Questions Answers Download pdf

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F.Sc Biology Chapter No.3 MCQs 1st Year Enzymes, Multiple Choice Question, Medical College ( MDCAT ) , ECAT & University Admission Entry Test Exams Online Preparation, Chapter Wise Question Answers, Old Board Papers reference with Each Question, All Queries accommodated within 24 Hours. Click here to Contact us for any Query/Question regarding Exams.

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We make a best selection of MCQs (Multiple Choice Questions) with Questions and Answers Admission Test on our website. All These MCQs are authentic and taking after our Verification of our Audit Teams from different areas of the World. These Thousands of MCQs cover different Topics on Biology Part-1. These MCQs are best for 1st Year Students. If they feel than they inform to other 11th Class Students to help them. All These MCQs (Multiple Choice Questions) are Chapter wise and downloadable in pdf format. In this Chapter wise Online Test we cover the Quiz/Exams about Biology First Year Chapter No. 3  “Enzymes”.

1st Year Biology notes and MCQs are according to latest Paper Pattern of Punjab Boards, All Exercises in Textbooks are solved to ensure the Quality Education to Medical College Students. All MCQs are according to UHS (University of Health Sciences) Lahore approved Syllabus.

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Biology – 1st Year
Chapter Name : Enzymes
Chapter No. 03
Question Type : Multiple Choice Questions [MCQ’s]
Note : All MCQ’s selected in this test are from OLD F.Sc. board , UHS and PMC(Pakistan Medical Commission) Islamabad Papers.




Book Name :  Biology
Chapter No. 03
Chapter Name : Enzymes 
Total MCQ from Text Book :  73
Book Version  : 2021
Published By : Punjab Text Book Board Lahore
Approved By : Govt of the Punjab and Federal Ministry for Education
Test Type : MCQ’s
Exam conduct By : Inter Boards of Sindh, KPK, Balochistan, AJK, Gilgit Baltistan, Punjab & Federal
Class / Grade  : 11 ( F.Sc. Intermediate)
Total Marks : 73
Total Time :  73 minutes




محترم اساتذہ کرام و  پیارے طلبا و طالبات
ہم نے یہ ویب سائٹ آپ کے فائدے اور امتحانی تیاری کو مدنظر رکھ کر بنائی ہے۔ اگر آپ کو اس سے کوئی فائدہ ہوتا ہے اور آپ کو یہ ایم سی کیوز امتحان کی تیاری کے لئے سود مند ہیں ۔ تو آپ اپنے  کم سے کم دس دوستوں کو اس کا لنک ضرور  شئیر کریں۔تاکہ اس سے آپ کے  بہت سارے دوسرے دوستوں کا فائدہ ہوسکے۔



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716

GRADE 11 - BIOLOGY CHAPTER NO.03 Enzymes

GRADE 11 - BIOLOGY CHAPTER NO.03 Enzymes

1 / 73

The rate enzymes - catalyzed reaction

2 / 73

Which property does not belong to cofactor:

3 / 73

The optimum temperator of most of the enzymes of our body is

4 / 73

Lock and key model was modified by

5 / 73

All enzymes are

6 / 73

The enzymes involved in the synthesis of proteins are integral part of

7 / 73

Which inhibitor is able to make an El complex but not a product:

8 / 73

Lock and key model was proposed by

9 / 73

The substance that sometimes acts as a source of chemical energy helping to drive the reaction that would otherwise be difficult or impossible

10 / 73

A little change in PH may leads to change

11 / 73

The ptimum pH for chymotrypsin is

12 / 73

If non-protein Part is loosely attached to protein, it is known as:

13 / 73

Rate of an enzymatic reaction directly depends on :

14 / 73

The reversible inhibitors usually constitue

15 / 73

The optimum temperator of human body enzymes is

16 / 73

Induce fit model was proposed by

17 / 73

5.5 is the optimum pH value for the enzyme

18 / 73

The optimum pH of pancreatic lipase is:

19 / 73

One of the followings is competitive in inbitor

20 / 73

The bio reactions catalysed by enzymes

21 / 73

The catalytic activity of an enzyme is restircted to its small portion called

22 / 73

An activated enzyme consisting of polypeptide chain and a co-factor is called :

23 / 73

The active site of an enzyme

24 / 73

9.70 is the optimum pH for:

25 / 73

Irreversible inhibitors

26 / 73

Reversible inhibitors form weak linkages with the :

27 / 73

The normal pH of Human Blood is:

28 / 73

The optimum pH for pancreatic lipase is

29 / 73

The optimum pH for enzyme arginase is :

30 / 73

If the non-protein part of Enzyme is covalently bondend then it is called

31 / 73

The optimum pH of the enzyme Arginase is

32 / 73

Optimum pH for Sucrase is:

33 / 73

The Biological active proteins are

34 / 73

The optimum pH of, enzyme pepsin is:

35 / 73

The rate of an enzyme - catalyzed reaction

36 / 73

The detachable cofactor of an enzyme is known as

37 / 73

Enzyme lowers down the energy of :

38 / 73

The optimum pH of Enterokinase is :

39 / 73

According to Lock and Key Model, the active site is _________:

40 / 73

According to lock and key model active site is used only as a -----:

41 / 73

NAD is an example of:

42 / 73

The essential raw materials frim which the coenzymes are made are

43 / 73

Inhibitors

44 / 73

Poisons like cyanide, antibiotics, anti-metabolites and some drugs are examples of :

45 / 73

The optimum temperaure for enzyme to work at maximum rate in human is:

46 / 73

The inhibitor which may destroy the globular structure of enzyme:

47 / 73

Pepsinogen is

48 / 73

If non - proteins part of the enzyme is loosely attached to the protein part it is known as

49 / 73

Enzyme denaturation resulted due to :

50 / 73

Which of the following enzyme works efficiently at the alkaline pH

51 / 73

Most of the enzymes are

52 / 73

Non-detatchable co-factor is

53 / 73

Coenzymes are closely related to :

54 / 73

The vitamins are essential raq material for the synthesis of:

55 / 73

The optimu pH of Salivary amylase is :

56 / 73

The non proteins part of an enzyme is

57 / 73

The rate of reaction of enzyme directly depends upon

58 / 73

Any factor which can alter the chemistry and ----- of an enzyme and affect ats rare of catalysis:

59 / 73

Enzyme is highly specific because of:

60 / 73

The enzyme with optimum pH=7.6 is :

61 / 73

An activated enzyme consisting of polypeptide chain and a cofactor is known as

62 / 73

The activation energy of the reaction is lowered by

63 / 73

How catalytic site becomes activated:

64 / 73

A 3- dimensional cavity bearing a specific charge:

65 / 73

Three dimensional globular protein is :

66 / 73

Enzyme required during ------ are present in dissolved form in cytosol:

67 / 73

The detachable co-factor is called activator if it is

68 / 73

An activated enzyme consists of polypeptide chain and -------:

69 / 73

If you add more substrate to already occurring enzymatic reaction and it has no effect on the rate iof reaction, What is the term given for this situation;

70 / 73

Active site of an enzyme consists of

71 / 73

Which one is the essential raq material for coenzymes?

72 / 73

Which statement about enzymes is not true

73 / 73

Competitive inhibitors are

Your score is

The average score is 47%

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