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Chapter 8&9 (The energy of life (The living cell is a miniature…
Chapter 8&9
The energy of life
The living cell is a miniature chemical factory where thousands of reactions occur
cells apply this energy to perform works
thermal energy
the kinetic energy associated with random movements of atoms or molecules
heat
thermal energy in transfer between objects
metabolism
the totality of an organism's chemical reactions
metabolic pathway
begins with a specific molecule and ends with a product
catabolic pathways
release energy by breaking down complex molecules into simpler compounds
anabolic pathways
consume energy to build complex molecules from simpler ones
bioenergetics
the study of how energy flows through living organisms
forms of energy
energy
the capacity to cause change
kinetic energy
energy associated with motion
potential energy
energy that matter possesses because of its location or structure
chemical energy
potential energy available for release in a chemical reaction
exergonic reaction
proceeds with a net release of free energy and is spontaneous
endergonic reaction
absorbs free energy from its surroundings and is nonspontaneous
energy coupling
the use of an exergonic process to drive an endergonic one
enzyme substrate
enzyme-substrate complex
the enzyme binds to its substrate.forming it.
Gylcolysis
occurs in cystoplasm of cell near mitochondria and doesnt need oxygen
Transition Reaction
cytoplasm to mitochondria and doesnt require oxygen
Krebs Cycle
in the mitochondrial matrix and no oxygen
Elcetron Transport System
in the inner mitochondrial membrane oxygen is needed aerobic