B4 - Lock and Key method

Slide 1

• The first step of the key and lock method.
• An active site only specifically fits one type of substrate molecule.
• It is called the lock and key method as like a key to a door the substrate molecule is specific to the active site, and no other keys fit.
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Slide 2

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• Once the substrate molecule joins with its specific active site the enzyme substrate molecule is produced. The bonds in the substrate molecule are weakened.

Slide 3

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• Eventually the bonds break and the product molecules are made. The reaction has then occurred.
• Particular active sites help to speed up reactions with reactions.
• An example of all of the reaction is Catalyse is the Substrate molecule, the products are Hydrogen Peroxide.