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ENZYMES enzymes - Coggle Diagram
ENZYMES 
Enzymes are biological catalysts.They speed up the cell's chemical reactions by lowering the activation energy.
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Structure of Enzymes
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Complex Enzymes
They require other molecules in order to function. The additional non-protein molecules are cofactors (inorganic ions: minerals) and coenzymes (organic molecules: vitamins). The active enzyme consisting of an apoenzyme combined with its cofactor is called as holoenzymes.
There are 2 models, which explains enzyme specifity.
Key-Lock Model
In the key-lock model, the enzyme-substrate interaction suggests that the enzyme and the substrate have specific complementary geometric shapes that fix exactly into one another. Enzymes are substrate specific.
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Induced-Fit Model
This model suggests that the active site of the enzyme continues to change until the substrate is completely bound to the active site of the enzyme, unlike the lock-and-key model, the induced fit model shows that enzymes are rather flexible structures. After the reaction is over, the enzyme changes back to its initial shape to accept new substrates.
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Enzymes often and in - ase --> Enzymes often and in - ase. Some enzymes have the suffix "ogen" at the end. It shows that the enzyme is inactive.
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