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Biology Fsc Part 1 Chapter 3 Online Test MCQs With Answers
Question # 1
The detachable co factor of an enzyme is known as
Choose an answer
Co enzyme
Ap enzyme
Activator
Prosthetic group
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Question # 2
Optimum pH for sucrase is
Choose an answer
2.00
4.50
5.50
7.60
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Question # 3
An activated enzyme consisting of a polypodies chain and a co factor is called.
Choose an answer
Apo enzyme
Co enzymes
Holo enzymes
Both a and b
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Question # 4
The rate of an enzyme catalyzed reaction
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Is constant under condition
Decreases as substrate concentration increases
Cannot be measured
Can be reduced by inhibitors
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Question # 5
Poisons, like cyanide are examples of.
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Enzymes
Co enzymes
Inhibitors
Co factors
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Question # 6
The rate of reaction of enzyme directly depends upon
Choose an answer
Amount of enzyme present at a specific time at unlimited substrate concentration
Nature of substrate
Maximum pH level
Low temperature
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Question # 7
Co enzymes are closely related to.
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Amino acids
Vitamins
Enzyms
Non protein particles
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Question # 8
If non protein part is loosely attached to proteins it is known as.
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Cofactor
Co enzyme
Active site
Holo ezyme
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Question # 9
An enzyme reacts only with its specific.
Choose an answer
Surface
Product
Substrate
Inhibitor
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Question # 10
If protein part of co factor is covalently bond to enzyme, it is called is.
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Co- Enzyme
Prosthetic group
Activator
apoezyme
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Question # 11
The optimum temperature of human body enzyme is.
Choose an answer
27
o
C
37
o
C
47
o
C
57
o
C
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Question # 12
An enzyme with its co enzyme or prosthetic removed is designated as
Choose an answer
Activator
Co enzyme
Apo enzyme
Holoenzyme
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Question # 13
Optimum pH values for enzyme arginase is
Choose an answer
7.60
9.70
8.60
9.52
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Question # 14
According to Lock and key model , the activate is.
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Soft structure
Flexible structure
Rigid structure
Attractive structure
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Question # 15
The raw material for co-enzymes are
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Lipids `
Proteins
Vitamins
None of these
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Question # 16
Prosthetic group is
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Covalenty bonded non-protein part of an enzyme
Loosely bonded non-proteins part of an enzyme
Co-factor consists of metal ions
None of these
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Question # 17
The reversible inhibitors usually constitute
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Strong linkage with enzyme
Weak linkage with enzyme
No Linage with enzyme
medium linkage
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