Catalysis and Enzymatic Reactions
Catalysis is the kind of chemical reaction in which the rate (speed) of a reaction is enhanced by the catalyst which is not consumed during the process of reaction and afterward it is removed when the catalyst is not used to make up the impurity in the product. The enzymatic reaction is the reaction that is catalyzed via enzymes.
Lock And Key Model
The lock-and-key model is used to describe the catalytic enzyme activity, based on the interaction between enzyme and substrate. This model considers the lock as an enzyme and the key as a substrate to explain this model. The concept of how a unique distinct key only can have the access to open a particular lock resembles how the specific substrate can only fit into the particular active site of the enzyme. This is significant in understanding the intermolecular interaction between proteins and plays a vital role in drug interaction.
![**Reaction Mechanism Exercise**
**Instruction:**
Draw the reaction mechanism of the following reaction. In the textbox below, name the reactant and the product(s).
**Reaction:**
An organic compound with two double bonds (dienes) reacts with Hydrobromic Acid (HBr) in a 1:1 equivalent.
**Reaction Scheme:**
A structure with two double bonds in a diene is shown on the left side.
\[ HBr (1\;equiv) \]
The reaction arrow points to the right.
**Explanation:**
In this reaction, an electrophilic addition reaction is likely taking place where the HBr adds across the double bonds. Students are expected to illustrate the step-by-step mechanism of the addition reaction, showing the interaction between the electron-rich double bonds and the electrophile (HBr). Key intermediates and resonance structures should be drawn if relevant.
**Task:**
Identify and draw the reactant and product(s), labeling each clearly. Provide a detailed mechanism, demonstrating understanding of electrophilic addition reactions in organic chemistry.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe8df32e3-4eba-4af7-972a-412049449c56%2F08b6d8ad-c6a5-4543-a9e6-97fe617f9ae7%2Fkju4l7_processed.jpeg&w=3840&q=75)
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