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energy and metabolism
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what is the name of the caacity to do work
energy
what is kenetic energy
the energy of motion
Potential energy
stored energy
name 3 forms heat has
mechanical, electric
heat,light
most forms of energy can be converted to
heat energy
what is the term useed to discribe the amount of heat required to raise the temp of water by 1 C
calorie
how much is 1 Kilocalorie
calorie
how is potential energy transfered through molecule through molecule
by way of chemical bonds
Oxidation
loss of electrons
Reduction
gain of electron
Redox Reactions
electrons coupled to each other
What is the first law of Thermodynamics
energy cannot be created or destroyed there for it can only be coverted from one form to another
Law of Thermodynamics 2nd law
disorder is morelikely than order
Disorder in the universeis called and it is always
Entropy
increasing
Laws Of Thermodynamics states chemical reactions can be described by the transfer of energy that occurs such as
endergonic reaction
exergonic reaction
what is endergonic reaction and exergonic reaction
endergonic reaction is a reaction requiring an input of energy
^G is positive
Exergonic reaction: areaction that releases free energy
^G is negative
Laws of Thermodynamic
most reactions_____ to get started
This is called
energy
Activation energy
Name 2 properties of Activation energy
It destabilizes existing chemical bonds
require for exergonic reactions
What is a catalysts
Sutstance that lwer the activation eenrgy of a reaction
Energy Currency of Cells
What are ATP and what do they stand for
the energy currency of cells
Adenosine triphosphate
ATP structure consist of
Ribose, 5 carbon sugar
adenine
three phosphates
Where do ATP stre energy in
bonds between phosphates
Since Phoshates are highly negative there fore
the phosphates repel each other
much energy is required to keep the phosphates bound to each other
much energy is released when the bond between two phoshates is broken
what happens whe bodn between phosphates are broken
ATP--->ADP + P
energy is released
what does ADP
Pi stand for
ADP=Adenosine diphosphate
P=Inorganic phosphate
Energy released when ATP is brken down to ADP can be used to fuel endergonic reaction
endergonic reaction
The energy released from an exergonic reaction can be used to fuel
production of ATP from ADP + P
Enzmes are
name 3 things about enzymes
molecues that catalyze reactions in living cells
1.most are proteins
2.Lower the activation energy requied for reaction
3.are not changed or consumed by the reaction
What happens when Enzymes interact with substrates
binding of an enzyme to a substrate causes the enzymes to change shape, produing a better induced fit between the molecules.
what is a substrate what is a active site
substrate
: molecule that will undergo reaction
Active site
: regino of the enzyme that binds to the substrate
what power does temp have on active enzymes
enzxyme activity may be increase with increasing temp, up to the temp optimum
tempeatures too far above the temp otimum can denature the enzyme, destroying its function
which rang of ph is enymes most suitable for
ph values from 6-8
Name and discribe
Metabolism
Anabolism
Catabolism
Metabolish: all chemical reactions occuring in organism
Anabolism: chemcial reaactions that exxpend energy to make new chemical bonds
catabolism: chemical reactiosn that harbvest energy when bonds are broken
dont forget about lab quiz
Author
i-love-tinkerbell
ID
67599
Card Set
energy and metabolism
Description
ch6
Updated
2011-02-20T11:43:19Z
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