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In the presence of enzymes, reactions proceeds at……….rate.
a) slow                                  
b) fast
c) medium                                            
d) no affected

b

How enzymes speed up the chemical reactions?
a) change the shape of substrate     
b) change the orientation of substrate
c) disrupt the charge on substrate
d) all of these

d

Characteristics of Enzymes:


Enzymes are………………..in nature.
a) lipids                                 
b) proteins
c) carbohydrates                 
d) hormones


b

Enzymes function as………….
a) catalyst                                            
b) protein
c) inhibitor                                            
d) activator

a

Which of the following is/are characteristics of enzymes…..?
a) specific in action                        
b) substrate specific
c) specific for reaction       
d) all of these

d