Which of these steps occurs first in an enzyme-catalyzed reaction?
A. The enzyme binds with the products so the reactants can be
released.
B. An enzyme becomes available, with an empty active site.
C. The substrate changes shape at the active site.
OD. The enzyme releases the products of the reaction.



Answer :

Final answer:

In an enzyme-catalyzed reaction, the first step involves the binding of the substrate to the enzyme's active site, followed by the formation of an enzyme-substrate complex, the catalysis of the reaction, and the release of products.


Explanation:

The first step in an enzyme-catalyzed reaction is the binding of the substrate to a specific part of the enzyme molecule known as the active site.

Each enzyme typically has one active site where only one particular substrate can bind, leading to the formation of an enzyme-substrate complex. Subsequently, the reaction occurs, transforming the substrate into products, which are then released from the enzyme's active site.


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