11th Class Biology MCQs Questions Answers Download pdf

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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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416

GRADE 11 - BIOLOGY CHAPTER NO.03 Enzymes

GRADE 11 - BIOLOGY CHAPTER NO.03 Enzymes

1 / 73

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

2 / 73

5.5 is the optimum pH value for the enzyme

3 / 73

Induce fit model was proposed by

4 / 73

Enzyme denaturation resulted due to :

5 / 73

One of the followings is competitive in inbitor

6 / 73

The non proteins part of an enzyme is

7 / 73

Competitive inhibitors are

8 / 73

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

9 / 73

Irreversible inhibitors

10 / 73

The rate enzymes - catalyzed reaction

11 / 73

The optimum pH for enzyme arginase is :

12 / 73

The vitamins are essential raq material for the synthesis of:

13 / 73

The active site of an enzyme

14 / 73

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

15 / 73

Enzyme lowers down the energy of :

16 / 73

Optimum pH for Sucrase is:

17 / 73

The optimum pH of, enzyme pepsin is:

18 / 73

Inhibitors

19 / 73

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

20 / 73

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

21 / 73

How catalytic site becomes activated:

22 / 73

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

23 / 73

The detachable co-factor is called activator if it is

24 / 73

The enzyme with optimum pH=7.6 is :

25 / 73

Which property does not belong to cofactor:

26 / 73

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

27 / 73

The optimum pH for pancreatic lipase is

28 / 73

Non-detatchable co-factor is

29 / 73

A little change in PH may leads to change

30 / 73

The bio reactions catalysed by enzymes

31 / 73

The optimum pH of the enzyme Arginase is

32 / 73

Most of the enzymes are

33 / 73

The ptimum pH for chymotrypsin is

34 / 73

The optimum temperator of human body enzymes is

35 / 73

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

36 / 73

Three dimensional globular protein is :

37 / 73

Rate of an enzymatic reaction directly depends on :

38 / 73

Which one is the essential raq material for coenzymes?

39 / 73

Reversible inhibitors form weak linkages with the :

40 / 73

The rate of reaction of enzyme directly depends upon

41 / 73

The reversible inhibitors usually constitue

42 / 73

The detachable cofactor of an enzyme is known as

43 / 73

The activation energy of the reaction is lowered by

44 / 73

A 3- dimensional cavity bearing a specific charge:

45 / 73

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

46 / 73

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

47 / 73

All enzymes are

48 / 73

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

49 / 73

Which of the following enzyme works efficiently at the alkaline pH

50 / 73

The essential raw materials frim which the coenzymes are made are

51 / 73

The inhibitor which may destroy the globular structure of enzyme:

52 / 73

Coenzymes are closely related to :

53 / 73

The Biological active proteins are

54 / 73

The normal pH of Human Blood is:

55 / 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;

56 / 73

Which statement about enzymes is not true

57 / 73

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

58 / 73

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

59 / 73

Lock and key model was modified by

60 / 73

9.70 is the optimum pH for:

61 / 73

Active site of an enzyme consists of

62 / 73

Lock and key model was proposed by

63 / 73

Pepsinogen is

64 / 73

The optimu pH of Salivary amylase is :

65 / 73

The rate of an enzyme - catalyzed reaction

66 / 73

The optimum pH of pancreatic lipase is:

67 / 73

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

68 / 73

Enzyme is highly specific because of:

69 / 73

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

70 / 73

NAD is an example of:

71 / 73

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

72 / 73

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

73 / 73

The optimum pH of Enterokinase is :

Your score is

The average score is 48%

0%



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