enzymes pp 35-37, 57. energy: the ability to do work requires energy to start the reaction...
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End in –ase (i.e. synthase, polymerase, helicase) Reduces the activation energy (E a ) Protein catalystTRANSCRIPT
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EnzymesPP 35-37, 57
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Energy: the ability to do work Requires energy to start the reaction (activation energy,
Ea)
Chem Rxns Review
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End in –ase (i.e. synthase, polymerase, helicase)
Reduces the activation energy (Ea)Protein catalyst
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•Each enzyme specific to a chemical rxn•Helps assemble the product OR
disassemble the reactants•Changes shape when attached to the
substrate (reactants)•Not used up in the rxn, can be used
over and over
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Every reaction has reactants that yield products
Reactants ProductsPotatoes contain an enzyme called
catalase which can break down hydrogen peroxide
2H2O2 2H2O + O2How do you know it was working?
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SUMMING UP YOUR OBSERVATIONSTemp increase
activity only to a certain point
Call this optimal temp
Temp changes the shape of the protein (enzyme)
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SUMMING UP YOUR OBSERVATIONS
Enzymes have a specific pH they can work within
Too low or too high and activity slows or even stops
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ConcentrationMore enzyme more work and more productPoint of saturation: enzymes can only work so fast even if you
add more substrate Max out on activity