Contents

As the substrate concentration increase, the rate of reaction……
a) decreases                
b) increases
c) not change              
d) sometimes increases sometimes decreases

b

Explanation: because substrate molecules can collide with enzyme molecules



Which of the following is/are the artificial inhibitor/s?
a) drugs                                  
b) pesticides
c) research tools         
d) all of these

d

A ……inhibitor molecule has a similar structure to the normal substrate molecule, and it can fit into the active site of the enzyme.
a) competitive           
b) Non-competitive
c) both a and b
d) all of these

a

How does a non-competitive inhibitor compete with enzyme?
a) it attaches with active site                       
b) it change the charge on active site
c) it binds and changes the shape of the whole enzyme        
d) all of these

a

Which of the following is competitive inhibitor?
a) cyanide                   
b) heavy metal ions
c) some insecticides   
d) sulphonamide

d

Explanation: it is an antibiotic drug which act as competitive inhibitors



A ……inhibitor molecule has quite different structure to the normal substrate molecule, and it cannot fit into the active site of the enzyme.
a) competitive            
b) Non-competitive
c) both a and b
d) all of these

b

Contents Details