Respuesta :

syed514
An enzyme have one or more active sites which is a kind of pocket. This pocket has a special shape, making sure it only fit special substrates.
"the shape of an enzyme determines which reaction it can catalyze"

The primary structure alone determines the protein structure and thereby what reactions it can catalyze.
Diatonic254

The active sites of enzymes differ in their shape hence making them highly specific with regards to the reactions they can catalyze. Once the specific reactants (that can fit and bind the active site) bind to the active site, the enzyme changes conformation causing it to lower the activation energy of the reactants hence enabling them to form new products rapidly.

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