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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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718

GRADE 11 - BIOLOGY CHAPTER NO.03 Enzymes

GRADE 11 - BIOLOGY CHAPTER NO.03 Enzymes

1 / 73

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

2 / 73

The optimum pH of Enterokinase is :

3 / 73

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

4 / 73

Most of the enzymes are

5 / 73

The essential raw materials frim which the coenzymes are made are

6 / 73

Enzyme lowers down the energy of :

7 / 73

Coenzymes are closely related to :

8 / 73

The bio reactions catalysed by enzymes

9 / 73

NAD is an example of:

10 / 73

Which property does not belong to cofactor:

11 / 73

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

12 / 73

One of the followings is competitive in inbitor

13 / 73

Reversible inhibitors form weak linkages with the :

14 / 73

Competitive inhibitors are

15 / 73

The reversible inhibitors usually constitue

16 / 73

Irreversible inhibitors

17 / 73

The optimum pH of pancreatic lipase is:

18 / 73

The optimum pH for pancreatic lipase is

19 / 73

All enzymes are

20 / 73

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

21 / 73

Inhibitors

22 / 73

Enzyme is highly specific because of:

23 / 73

Enzyme denaturation resulted due to :

24 / 73

9.70 is the optimum pH for:

25 / 73

The optimum pH of the enzyme Arginase is

26 / 73

The rate of reaction of enzyme directly depends upon

27 / 73

The rate of an enzyme - catalyzed reaction

28 / 73

Non-detatchable co-factor is

29 / 73

The optimum temperator of human body enzymes is

30 / 73

Which of the following enzyme works efficiently at the alkaline pH

31 / 73

The detachable cofactor of an enzyme is known as

32 / 73

The activation energy of the reaction is lowered by

33 / 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;

34 / 73

The enzyme with optimum pH=7.6 is :

35 / 73

Which one is the essential raq material for coenzymes?

36 / 73

Optimum pH for Sucrase is:

37 / 73

The optimu pH of Salivary amylase is :

38 / 73

The vitamins are essential raq material for the synthesis of:

39 / 73

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

40 / 73

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

41 / 73

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

42 / 73

A little change in PH may leads to change

43 / 73

Active site of an enzyme consists of

44 / 73

Rate of an enzymatic reaction directly depends on :

45 / 73

Three dimensional globular protein is :

46 / 73

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

47 / 73

How catalytic site becomes activated:

48 / 73

Pepsinogen is

49 / 73

The normal pH of Human Blood is:

50 / 73

The active site of an enzyme

51 / 73

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

52 / 73

The inhibitor which may destroy the globular structure of enzyme:

53 / 73

Induce fit model was proposed by

54 / 73

The ptimum pH for chymotrypsin is

55 / 73

A 3- dimensional cavity bearing a specific charge:

56 / 73

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

57 / 73

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

58 / 73

The optimum pH for enzyme arginase is :

59 / 73

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

60 / 73

Lock and key model was modified by

61 / 73

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

62 / 73

The optimum pH of, enzyme pepsin is:

63 / 73

Which statement about enzymes is not true

64 / 73

5.5 is the optimum pH value for the enzyme

65 / 73

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

66 / 73

The non proteins part of an enzyme is

67 / 73

The detachable co-factor is called activator if it is

68 / 73

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

69 / 73

The Biological active proteins are

70 / 73

The rate enzymes - catalyzed reaction

71 / 73

Lock and key model was proposed by

72 / 73

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

73 / 73

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

Your score is

The average score is 47%

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