Enzymes We couldnt live without them Flow of

Enzymes We couldn’t live without them! {

Flow of energy through life - Life is built on chemical reactions

Nothing works without enzymes! How important are enzymes? All chemical reactions in living organisms require enzymes to work enzyme Building molecules: Synthesis Enzymes + enzyme Breaking down molecules: Digestive Enzymes + s 4

What is an Enzyme? Function: Enzymes…. • Are Biological Catalysts – Speed up rxns in cells • Lower the Activation Energy (Energy required for a rxn to begin)

What is an Enzyme? Structure: Enzymes…. • Are made of Proteins • Aren’t changed by the rxns • Are “specific” – only one enzyme will work with one substrate (lock and key)

How do I identify and Enzyme? • Always ends in “~ASE” • Examples: Polymerase, Helicase, Salivary Amylase

Enzyme/Substrate Complex “Lock and Key” Substrate – the substance (reactant) that the enzyme works on Product – the substance that is produced by the reaction Active Site – The area of the enzyme the substrate fits into Substrate Products Active Site Enzyme (unchanged)

What affects how well an Enzymes work? • p. H: Perform best at a p. H of 6 -8 – depends where in body • Temperature: Enzymes perform best at 98. 6 degrees • Shape: This is the most important factor!

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