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Metabolism
All of an organism's chemical reactions
Catabolic Pathways
Metabolic pathways that release energy by breaking down complex molecules
Anabolic pathways
Metabolic pathways that consume energy to build complex molecules.
Kinetic Energy
The energy of motion
Potential Energy
The energy an object possesses due to its location/structure
Chemical Energy
A form of kinetic energy in molecules due to the arrangement of atoms
Thermodynamics
The study of energy transformations
Open system
A system where things can enter and exit, used in biology
Closed System
A system where things cannot enter or exit
1st Law of Thermodynamics
Energy cannot be created or destroyed
2nd Law of Thermodynamics
Every energy transformation makes the universe more disordered
Entropy
The measure of disorder
Exergonic Reactions
Reactions that release energy.
Endergonic Reactions
Reactions that absorb energy, nonspontaneous
Delta G
The energy “cost,” negative when the reaction is exergonic.
Allo-
Distant
Positive feedback
a continuous, self-feeding cycle, like the snowball effect
Negative feedback
Fixes what causes it to start, so it ends.
Oxidative reactions
A reaction with the loss of an electron (OIL RIG)
Reduction reactions
Reactions with the gain of an electron.
Photosystems
Proteins within the thylakoid membrane that store chlorophyll.
Stoma
A tiny leaf hole
Xylem
Plant veins
Note 
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