enzymes. the body is always looking for ways to save energy! this is where enzymes come into play!...
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Enzymes What are they? What properties do they have? Why do we need them? How do they work?TRANSCRIPT
Enzymes
The body is always looking for ways to save energy!
This is where enzymes come into play!
Help the body do this!
Enzymes
What are they? What properties do they have?
Why do we need them?
How do they work?
Enzymes – What are they?Proteins that help chemical reactions to
occur in living organisms
Important Parts of a Chemical Reaction
Reactants Products
Enzymes
Properties
Specific (a different enzyme for each different type of reactions in the body)
Enzymes
PropertiesSpecific
Increase rate of the reaction (help make reaction happen more often or faster)
Enzymes
Properties
SpecificIncrease rate of the reaction
Unchanged at the end of the reaction
Reusable
Enzymes
PropertiesSpecific
Increase rate of the reactionUnchanged at the end of the reaction
Why do you need them?
Reusable
Enzymes
Need themReactions naturally occur too slow to maintain life!
Can’t increase temperatures in cells (fatal)
How do enzymes work?
Lock & Key TheoryThe enzyme needs to bind to the reactants called
a substrate at the active site to work.
EnzymeReactant
Let’s Do An Example
Sucrose + H2O
Glucose + Fructose
Sucrose + H2O
Glucose + Fructose
Reactants
Products
For a reaction to occur the sucrose& water have to collide with
enough energy to break the bond that holds them together to form
the new products.
For a reaction to occur the sucroseand water would have to collide with
enough energy to break bonds and formthe new products.
This energy is the called activation energy.
Energy
Progress of reaction
Energy
Progress of reaction
Substratesor
Reactants
Energy
Progress of reaction
Substrates Products
Energy
Progress of reaction
Substrates Products
Energy
Progress of reaction
Substrates Products
Activation energy
Energy
Progress of reaction
Substrates Products
Activation energyEnzymes reduce the
Height aka reduce the activation
energy
An Enzyme is like a short cut!
What factors can affect the activity of enzymes?
Based on these graphs, what conditions are generally the best for enzyme function?