Biology Class 11 Chapter 3enzymesTest 7

Biology Class 11 Chapter 3
enzymes
Test 7

1. Koshland proposed?

a) Fluid mosaic Model
b) Unit Membrane Model
c) Lock and Key Model
d) Induce Fit Model

2. When substrate combines with enzyme there ?

a) Flexibility in structure
b) Change in structure
c) No change in structure
d) Elasticity in structure

3. Any factor that can alter the chemistry and shape of an enzyme can affect its rate of?

a) Catalysis
b) Decomposition
c) Formation
d) Binding

4. The rate of reaction directly depends upon the amount of ?

a) Enzyme
b) Substrate
c) ES-complex
d) Reactants

5. After a certain limiting concentration of enzyme the rate of reaction does not depends upon its?

a) Decrease
b) Catalysis
c) Increase
d) Inhibition

6. At low concentration of substrate the reaction rate is directly proportional to the?

a) Active site
b) Binding site
c) Enzyme
d) Substrate

7. The rate of reaction of enzyme is increased by increasing?

a) Chemical energy
b) Temperature
c) nergy
d) Potential

8. All enzyme work at their maximum at a specific temperature called?

a) Extreme
b) Final
c) Optimum
d) At least

9. Optimum temperature for Human body is?

a) 390C
b) 370C
c) 410C
d) 350C

10. Heat provides enzyme? a) Activation energy
b) Fission energy
c) Binding energy
d) Chemical energy

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