TLC is often used in organic lab to monitor organic reaction. By analyzing the Rf of the reaction mixture compare to the starting materials, one can make sure whether the reactic is complete. Here is a TLC plate of a NaBH4 reduction reaction of benzophenone after 2 hours (shown below). Looking at the TLC plate shown below, should you conclude that the reaction is complete? The reaction did not go at all The TLC does not make sense The medium has fully reacted -T--4-- Starting After 2 hours Material After 15 min
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.
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