The chemical reaction that take place in cells rely on enzymes. Enzymes work best in certain conditions,for example at a certain temperature. This is important reason why you need a steady state inside your cells.
What are enzymes?
Enzymes are the catalysts that speeds up chemical reactions in living organisms. They are protiens - large molecules made up of long chains of amino acids.
In all cases, the molecules must fit exacly into a part of the enzyme called the active site. Its a bit like fitting the right key in a lock.
Keywords:
Enzymes,Catalysts,Lock and Key Model and Active Site.
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