1.
The degree of inhibition for non competitive inhibition of an enzyme catalyzed
reaction?
a) Increase with increase substrate
concentration
b) Reaches with increase in substrate
concentration
c) Reaches a maxima with increase in
substrate concentration and then decreases
d) Decreases with increase in substrate
concentration
2.
Enzyme papain is used with success to
a) increase meat production
b) ripen papaya fruit
c) leaven bread
d) tenderize meat
3.
Which one of the following reactions used for the purpose of recycling enzymes
in bioprocesses
a) isomerization
b) phosphorylation
c) immbolization
d) polymerization
4.
Which one of the following techniques is not ideal for immobilized cell free
enzymes?
a) physical entrapment by encapsulation
b) physical bonding by flocculation
c) covalent chemical bonding by cross
linking the precipitate
d) covalent surface bonding to surface
carriers
5.
Most industrial enzymes are obtained from
a) plants
b) microbes
c) insects
d) animal tissues
6.
Ki indicates
a) reaction velocity
b) Competition inhibition
c) denaturation of enzyme
d) all the above
7.
The phenomenon by which the synthesis of a set of enzyme leading to a product
from outside is known as
a) repression
b) suppression
c) depression
d)none of these
8. De
novo synthesis of an enzyme, promoted by the substrate on which it acts, is
characterised by the term
a) induction
b) activation
c) gratuity
d)derepression
9.
Out of total enzymes present in the cell mitochondria alone has
a) 4%
b) 70%
c) 95%
d) no enzymes
10. Enzymes,
vitamins and hormones can be classified into a single category of biological
chemicals because all of them
a) Aid in regulating metabolism
b) Are synthesised in organism
c) Are proteins
d) Enhance the oxidation metabolism
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Answers
1. c) Reaches a maxima with increase in
substrate concentration and then decreases
2. d) tenderize meat
3. c) immbolization
4. b) physical bonding by flocculation
5. b) microbes
6. b) Competition inhibition
7. a) repression
8. a) induction
9. b) 70%
10. c) are proteins
