Biology- 11 Chapter 3
Enzymes - 10
1.
When the temperature is reduced to freezing point, the enzymes are?
a) Denatured
b) Activated
c) Inactivated
d) Working very fast
2.
By very high temperature, the enzymes are?
a) Denatured
b) Working very fast
c) Inactivated
d) Activated
3.
The ph at which the enzymes work very fast is known as?
a) Optimum ph
b) Zero ph
c) Maximum ph
d) Minimum ph
4.
The optimum ph for enzymatic reactions is?
a) 1 to 3
b) 2 to 4
c) 6 to 8
d) 8 to 12
5.
The optimum ph for pepsin is?
a) 2
b) 5.50
c) 4.50
d) 6.50
6.
9 is the optimum ph for?
a) Chymotrypsin
b) Pancreatic lipase
c) Arginase
d) Catalase
7.
The optimum ph for enterokinase is?
a) 6.50
b) 5.50
c) 7
d) 2
8.
6.80 is the optimum ph for?
a) Arginase
b) Catalase
c) Sucrase
d) Salivary amylase
9.
Extreme ph leads to the?
a) Activation of enzymes
b) Denaturation of enzymes
c) Increase in reaction
d) Inactivation of enzymes
10.
The enzyme which form green papaya is known as?
a) Arginase
b) Catalase
c) Papain
d) Pepsin
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