問題一覧
1
Inactive enzymes formed in the living cells, are called
Zymogen
2
lock and key' model of the enzyme action describes
The active site is complementary in shape to that of substance
3
Ribozymes are
RNA in nature
4
Cocarboxylase is
Biotin
5
digestive enzymes belongs to:
Hydrolases
6
Aldolase enzyme belongs to :
Lyases
7
Rise in temperature will increase the rate of the reaction due to:
Increase in kinetic energy of reactant
8
In the extremes of pH the reaction will stop due to
Denaturation of the enzyme
9
the point at which the reaction reach its maximum speed known as
V max
10
all of the following enzymes having stereospecificity except
Glucose 6-p isomerase
11
The Michaelis constant, Km is
Numerically equal to the substrate concentration that gives half maximal velocity
12
Velocity at Km is
Half the V max
13
Noncompetitive enzyme inhibition leads to:
Vmax ⬇️
14
Km changes and Vmax remains the same. What is the type of Enzyme inhibition?
Competitive Inhibition
15
The kinetic effect of purely competitive inhibitor of an enzyme
Increases Km without affecting Vmax
16
In reversible non-competitive enzyme activity inhibition
Concentration of active enzyme is reduced
17
In reversible non-competitive enzyme activity inhibition
Inhibitor lowers the maximum velocity attainable with a given amount of enzyme
18
In competitive enzyme activity inhibition
The structure of inhibitor generally resembles that of the substrate
19
In enzyme kinetics Vmax reflects
The amount of an active enzyme
20
In enzyme kinetics Km implies
The substrate concentration that gives one half Vmax
21
In competitive enzyme activity inhibition
Apparent Km is increased
22
In competitive inhibition, the inhibitor
Competes with the substrate
23
Competitive inhibitors
Increase the Km
24
Competitive inhibition can be relieved by raising the
Substrate concentration
25
Under anaerobic conditions, 1 molecule of glucose yields......ATP.
Two
26
Rate limiting enzyme in glycolysis
Pyruvate kinase
27
The following is an enzyme required for glycolysis
Glucokinase or hexokinase
28
A Hormone which stimulates glycolysis is:
Insulin
29
Enolase enzyme is repressed by:
Fluoride
30
Pyruvate kinase deficiency leads to
Hemolytic anemia
31
Enzyme inhibited by Fluoride and arrests glycolysis
Enolase