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 P ID: 917271
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Slide1
Enzymes
Slide2T
he body is always looking for ways to save energy!
This is where enzymes come into play!Help the body do this!
Slide3Enzymes
What are they
? What properties do they have?
Why do we need them?
How do they work?
Slide4Enzymes
–
What are they?
Proteins that help chemical reactions
to occur in living organismsImportant Parts of a Chemical Reaction
Reactants
Products
Slide5Enzymes
Properties
Specific (a different enzyme for each different type of reactions in the body)
Slide6Enzymes
Properties
Specific
Increase rate of the
reaction (help make reaction happen more often or faster)
Slide7Enzymes
Properties
Specific
Increase rate of the
reaction
Unchanged at the end of the reaction
Reusable
Slide8Enzymes
Properties
Specific
Increase rate of the reaction
Unchanged at the end of the reaction
Why do you need them?
Reusable
Slide9Enzymes
Need them
Reactions
naturally occur too
slow to maintain life!
Can’t increase
temperatures in
cells (fatal)
Slide10How do enzymes work?
Slide11Lock & Key Theory
The enzyme
needs to bind
to the reactants called a substrate at the active site to work.
Enzyme
Reactant
Slide12Let’s Do An
Example
Slide13Sucrose + H
2
O
Glucose + Fructose
Slide14Sucrose + H
2
O
Glucose + Fructose
Reactants
Products
Slide15For 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.
Slide16For a reaction to occur the sucrose
and water would have to collide with
enough energy to break bonds and formthe new products.
This
energy is the
called
activation
energy.
Slide17Energy
Progress of reaction
Slide18Energy
Progress of reaction
Substrates
or
Reactants
Slide19Energy
Progress of reaction
Substrates
Products
Slide20Energy
Progress of reaction
Substrates
Products
Slide21Energy
Progress of reaction
Substrates
Products
Activation energy
Slide22Energy
Progress of reaction
Substrates
Products
Activation energy
Enzymes reduce the
Height aka reduce the
activation energy
An Enzyme is like
a short cut
!
Slide23What factors can affect the activity of enzymes?
Based on these graphs, what conditions are generally the
best for enzyme function?