What are enzymes? Write a brief note on the mechanism of enzyme catalysis.

Explanation

Enzymes are complex protein molecules with three dimensional structures. They catalyse the chemical reaction in living organism. They are often present in colloidal state and extremely specific in catalytic action.
Mechanism of enzyme catalysed reaction :
The following mechanism is proposed for the enzyme catalysis
` E +S iff ES to P + E `
Where E is the enzyme, S the substrate (reactant), ES represents activated complex and P the products.