Answer:
<em>The competitive inhibitor binds to the active site and prevents the substrate from binding there.</em>
Explanation:
The noncompetitive inhibitor binds to a different site on the enzyme; it doesn't block substrate binding, but it causes other changes in the enzyme so that it can no longer catalyze the reaction efficiently.
The R group varies, and it is the carbon-phosphate backbone
What are you asking Im not understanding this I would help but I dont unerstan.