The substrate concentration at which the enzyme catalyzed reaction achieves ½ Vmax is its ____ value.

1. Km 2. Kcat
3. pKa 4. Q10

Subtopic:  Enzyme Catalysis | Factors Affecting Enzyme Catalysis Reaction |
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In general, with every 100C rise in the temperature [in the range 00C to 40C], the rate of enzyme catalyzed reaction:
1. Becomes half
2. Gets doubled
3. Remains same
4. There is no such correlation in general

Subtopic:  Enzyme Catalysis |
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Low temperature:
1. Preserves enzyme in a temporary inactive state
2. Denatures the enzyme
3. Makes enzyme more active
4. Does not have any affect on enzyme activity

Subtopic:  Enzyme Catalysis | Factors Affecting Enzyme Catalysis Reaction |
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The figure given below shows the conversions of a substrate into product by an enzyme. In which one of the four options (1-4), the components of the reaction labelled as A, B, C and D are identified correctly:

  

 Options

 A B C D
1. Transition
state
Potential
energy
Activation
energy
without
enzyme
Activation
energy with
enzyme
2. Potential
energy
Transition
state
Activation
energy with
enzyme
Activation
energy
without
enzyme
3. Activation
energy with
enzyme
Transition
state
Activation
energy
without
enzyme
Potential
energy
4. Potential
energy
Transition
state
Activation
energy
without
enzyme
Activation
energy with
enzyme
Subtopic:  Enzyme Catalysis |
 86%
From NCERT
AIPMT - 2010

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