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.
When a certain metals or a elements are placed in the flame, the electrons of the atom get excited by absorbing the heat energy from the flame. When the electrons return back from the excited state to lower energy level, the absorbed energy is released in the form of photon having certain wavelength and energy. This emitted photon may have wavelength in the visible range or in the UV or radiation as well. The color observed in the flame is a combination of different wavelengths.
Now, the relation between the wavelength and the energy of the emitted photons is inversely proportional. As the wavelength is higher, energy emitted will by the photon will be lower. This is given by the equation as follows.
E is the energy of the photon.
h is the Planck's constant
c is the speed of the light
is the wavelength of photon.
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