What is a substrate?

a molecule that changes state
a place where the reaction occurs
a place on the product where the enzyme fits
a reactant that is catalyzed by an enzyme

Respuesta :

The accurate answer is:
A reactant that is catalyzed by an enzyme

A molecule that changes state
A place where the reaction occurs
A place on the product where the enzyme fits
*These answers right here are incorrect*
The answer behind this is
none of those answers above don't provide an complete understanding and they don't describe themselves. 
a reactant that is catalyzed by a enzyme is the correct answer.