First Year Biology Chapter 5 Online MCQ Test for 1st Year Biology Chapter 5 Variety of Life Preparation

FSC Part 1 Biology Ch. 5 Test

11th Class Biology Chapter 5 Online MCQs Tests:

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MCQ's Test For Chapter 5 "Biology Fsc Part 1 Chapter 5 Online Test"

Try The MCQ's Test For Chapter 5 "Biology Fsc Part 1 Chapter 5 Online Test"

  • Total Questions17

  • Time Allowed20

Biology Fsc Part 1 Chapter 5 Online Test

00:00
Question # 1

A slight increase or decreasein pH of an enzyme causes.

Question # 2

Substrate molecule fits into binding site by wek chemical forces such as.

Question # 3

Pick the enzyme which is not related to others.

Question # 4

Which of the following is NOTa hyrolase

Question # 5

If an enzyme solutionis saturated with substrate, the most effective way to obtain an even faster yield of products would be.

Question # 6

All enzymes are syntheesized inside cell by 

Question # 7

How does a non competitive inhibitor decrease the rae ofn enzyme catalysed reaction.

Question # 8

Pepain works in 

Question # 9

Penicilllin permanetly disables the enzymes responsible for building bacterial cell walls becasue it acts as.

Question # 10

The speed of a chemicla reaction depends on the amount of.

Question # 11

The protine part of enzyme is called.

Question # 12

the mechanism of enzyme inhibition, usedto understand the factors that influence enzyme activity is called.

Question # 13

In feedback inhibition, the final product inhibits.

Question # 14

When food is oxidized in cell, enxymes draw electrons from food molecules and transfer them to.

Question # 15

The loss of gloular shape of enzyme is called.

Question # 16

Pepsins's optimum pHis.

Question # 17

The cofactos which are attached with enxyme by convalent bonds are called.

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11th Class Biology Chapter 5 Test

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FSc Part 1 Biology (New Book) Chapter 5 Important MCQ's

Sr.# Question Answer
1 Which of the following can affect enzyme activity
A. pH
B. Temperature
C. Enzyme concentration 
D. All of above
2 Catalytic site is adtivatid when 
A. enzyme inhibitor complex is formed
B. ES complex is formed
C. Subsgtrate attaches at allosteric site
D. Spontaneously
3 Co enzyms participate in enzyme catalyzed reactions, ofter by transporting .
A. Electrons
B. Hydrogen atoms
C. Phosphate groups
D. Both a and b
4 The cofactos which are attached with enxyme by convalent bonds are called.
A. allosteric enxym
B. Apoenzyme
C. Prosthtic group
D. Proenzyme
5 The kinds or types of co factor are.
A. One
B. Two
C. Three
D. Four
6 Which of the following is NOTa hyrolase
A. Cytochrome oxidase
B. amylase
C. Lipase
D. Peptidase
7 Small cleft or depression is the sourface of globular enzyme is.
A. Active site
B. Synaptic cleft
C. T tubule
D. No such cleft exists
8 The enzyme whcih uses ATP to join molecules.
A. Isomerases
B. Ligases
C. Hydrolases
D. Oxidoreductases
9 Which of the following statemetns about enzymes is correct. 
A. They increasse the activation energy of a reaction 
B. They are consumed during the reaction 
C. They are specific in terms of the reactions they catalyse
D. They always wor optimally at high temperatures.
10 Enzmes are .................globular proteins.
A. 2 D
B. 3 D
C. 4 D
D. Both a and c

Test Questions