Task: Text Categorization
Input (English): Question: An allosteric modulator influences the activity of an enzyme: 
 Options:  <0> Competing with a substrate for the catalytic site. <1> Joining the enzyme at a site other than the catalytic site. <2> Changing the nature of the formed product. <3> Changing the specificity of the enzyme for the substrate. <4> Denaturing the enzyme.
Output (English): chemistry