Smartindia Classroom
CONTENTS
Biology
Biology-Prev.Year Repeated Questions
Chemistry
English
Mathematics
Physics
Biotechnology
Back to home
Start Practice
Question-1
Some of the enzymes, which are associated in converting fats into carbohydrates, are present in
(A)
microsomes
(B)
glyoxysomes
(C)
liposomes
(D)
golgi bodies.
Question-2
Enzymes having slightly different molecular structure but performing identical activity are
(A)
holoenzymes
(B)
isoenzymes
(C)
apoenzymes
(D)
coenzymes.
Question-3
Which is a typical example of ‘feedback inhibition’?
(A)
cyanide and cytochrome reaction
(B)
sulpha drugs and folic acid synthesizer bacteria
(C)
allosteric inhibition of hexokinase by glucose 6-phosphate
(D)
reaction between succinic dehydrogenase and succinic acid
Question-4
Enzyme first used for nitrogen fixation
(A)
nitrogenase
(B)
nitroreductase
(C)
transferase
(D)
transaminase.
Question-5
In which one of the following enzymes, is copper necessarily associated as an activator?
(A)
carbonic anhydrase
(B)
tryptophanase
(C)
lactic dehydrogenase
(D)
tyrosinase.
Question-6
The enzyme enterokinase helps in the conversion of
(A)
caesinogen into caesin
(B)
trypsinogen into trypsin
(C)
pepsinogen into pepsin
(D)
proteins into polypeptides.
Question-7
An organic substance bound to an enzyme and essential for its activity is called
(A)
isoenzyme
(B)
coenzyme
(C)
holoenzyme
(D)
apoenzyme.
Question-8
Which factor is responsible for inhibition of enzymatic process during feed back?
(A)
substrate
(B)
enzymes
(C)
end product
(D)
temperature
Question-9
Which one of the following statements regarding enzyme inhibition is correct?
(A)
competitive inhibition is seen when a substrate competes with an enzyme for binding to an inhibitor protein
(B)
competitive inhibition is seen when the substrate and the inhibitor compete for the active site on the enzyme
(C)
non-competitive inhibition of an enzyme can be overcome by adding large amount of substrate
(D)
non-competitive inhibitors often bind to the enzyme irreversibly
Question-10
The nuclease enzyme, which begins its attack from free end of a polynucleotide, is
(A)
polymerase
(B)
endonuclease
(C)
exonuclease
(D)
kinase.
Your Score 0/10
Click
here
to see your answersheet and detailed track records.
Plus 2 Biology Science
CBSE
Practice in Related Chapters
Plant Reproduction
Animal Tissue
Kingdom Monera
Plant Kingdom
Biological Classification
General Biology
Respiratory System
Digestive System And Nutrition
Circulatory System and Immunity
Plant Morphology
Plant Anatomy
Cell Reproduction
Human Genetics & Genetic Disorders
Mendelian & Postmendelian Genetics
Genes & Chromosomes
Biomolecules
Enzymes
Cell Respiration
Cell Respiration
Kingdom Fungi
Aging And Death
Common Human Diseases
Evolution
Drug And Addiction
Reproduction And Embryonic Development
Endocrine System
Excretion And Osmoregulation
Nervous System & Sense Organs
Musculo-Skeletal System
Powered By