The inhibition caused by the final end product of a reaction is called

Non competitive inhibition

Explanation:

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During enzymatic catalysis, the active sites could be occupied by the very same products' molecules turning out into an inhibition (the reaction starts to slow down since to active places are available for the reagents to react). Nonetheless this inhibition is not competitive as long as the product does not react due to the active sites it is occupying.

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particle   p is an electron and particle q is a neutron