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Human Physiology
Chapter 5 - Energy
6
Physiology
Undergraduate 2
09/11/2007

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Term
Energy
Definition
The ability to do work
Term
Energy:
Types
Definition
*Kinetic - movement, ball in air, skiing, riding bikes, air molecule in room, electrons moving
*Potential - not moving, stored energy, chair on ramp
Term
Energy:
What forms may energy take? (3)
Definition
*Electrical - kinetic
*Mechanical - kinetic
*Chemical
Term
Metabolism
Catabolic vs. Anabolic
Definition
All the reactions in the body that involve energy transformation
*Catabolic - releasing energy, low entropy to high, big to small
*Anabolic - need energy, high entropy to low, build bigger molecules
~one must predominate
Term
Energy Transfer
Definition
involves oxidation-reduction reactions
-breakdown of substrate for energy involves transfer of electrons
*intermediate carriers (NAD, FAD, ect)
*to a final electron acceptor (oxygen)
Term
Aerobic Respiration
Definition
-convert sugar or fat to CO2 and H2O
*transfer some of the energy released to make ATP
-controlled release of energy in small steps
*oxygen used only in the last step
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