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Why is an enzyme in a chemical reaction like a lock and key?

A. The active site and the substrate fit perfectly together, and when they do, they unlock the chemical reaction.
B. The non-reactive site and the substrate fit perfectly together, and when they do, they unlock the chemical reaction.
C. None of these
D. The nucleoid and Golgi Apparatus fit perfectly together, and when they do, they unlock the chemical reaction.
E. The active site and the cell membrane fit perfectly together, and when they do, they unlock the chemical reaction.

Answer :

Answer:

A

Explanation:

the enzyme is substrate specifix coz of this trait

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Rewritten by : Barada

Final answer:

The enzyme is likened to a lock, and the substrate to a key, because of the unique fit between the enzyme's active site and its specific substrate. When they align, the enzyme can catalyze the chemical reaction the substrate undergoes.

Explanation:

The enzyme in a chemical reaction is like a lock and key because of the 'Lock and Key' model of enzyme action. In this model, the enzyme (the 'lock') has a specific active site that uniquely fits one particular type of substrate (the 'key').

When the substrate slots into the enzyme's active site, they fit perfectly together, similar to how a key fits into a lock. As a result, the enzyme can catalyze (speed up) the chemical reaction that the substrate undergoes.

So, the correct answer to your question would be 'A. The active site and the substrate fit perfectly together, and when they do, they unlock the chemical reaction.'

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