Imagine that you are observing an enzyme-catalyzed reaction in the lab. Every time you add more enzyme, the reaction rate increases proportionally until the reaction rate suddenly levels off. No other chemicals were added, and no modifications were made in the experimental setting. Why do you think the reaction rate stopped increasing?

Actually an enzyme works by binding a substrate molecule to its active site, producing a product , resulting in an increase in the rate of reaction.

Enzyme + substrate = Enzyme + product

Whenever enzymes are added , reaction rate increases as the substrates are being bound to the enzyme's active sites but then occurs a stage where further addition of enzyme cannot increase the reaction rate because all the substrates have bound to the enzyme and there are no substrates left. Hence the reaction rate stopped increasing.

mahima6824soni mahima6824soni · Answer 2 · 2022-02-25T14:02:47+01:00

The rate of reaction stops increasing because there is no substrate left to bound with an enzyme to increase the rate of reaction.

What is an enzyme?

An enzyme is a substance that increases the rate of reaction by catalyzing the reaction.

The enzyme is called a biological catalyst.

Enzyme work when it combines with the substrate of the reaction to make products.

When the enzyme is added, the rate of reaction increase because it fastens the reactions.

But when the substrate is converted into a product and there is no substrate left to combine with enzyme the rate of reaction stop increasing.

Thus, The rate of reaction stops increasing because there is no substrate left to bound with an enzyme to increase the rate of reaction.

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