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29 Cards in this Set
- Front
- Back
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metabolic pathway
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sequence of enzymatically catalyzed chemical rxn in cell
determined by enzymes enzymes coded from genes |
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collision theory
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chem rxn occur when atoms, ions, mol collide
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activation theory
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needed to disrupt electronic configurations
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reaction rate
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frequency of collisions with enough energy to bring about rxn
incr w/ enzymes, T, Pressure |
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catalyst
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speed up chem rxn w/o being perm altered
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enzyme components
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apoenzyme
coenzyme holoenzyme enzyme substrate complex |
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apoenzyme
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inactive pro portion of enzyme
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coenzyme
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cofactor (activator) non pro portion
impt co enzymes: nad+, nadp+, fad, coenzyme A |
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haloenzyme
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apoenzyme + cofactor
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enzyme substrate complex
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apoenzyme + cofactor + substrate
substrate breaks into products & enzyme is recycled |
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enzyme influenced by
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temp
pH substrate [ ] competitive inhibitor non competitive inhibitor - altered active site or allosteric site |
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oxidation
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removal of electrons
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reduction
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gain of electrons
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redox rxn
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oxidation reaction paired w/ reduction rxn
mechanism underlying energy release |
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substrate-level phosphorylation
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ADP to ATP
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oxidative phosphorylation
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E released from T of electrons of 1 cmpd to another used to generate ATP in ETC
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equation of cellular respiration
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c6h12o6 + 6o2 = 6CO2 + 6H2O + ATPs
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substrate level phosphorylation
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atp generated when high E phos transferred from substrate to ADP
c-c-c-p+ADP = c-c-c+atp |
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oxidative level phosphorylation
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electrons T from organic cmpds to one grp of electron carriers (nad/fad)
electons pass thru series of ETC generate APT from ADP through chemiosmosis |
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aerobic respiration
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final electron acceptor in ETC is oxygen
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anaerobic respiration
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final electron acceptor in ETC is NOT oxygen - yield less E
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cho catabolism occurs in:
eukaryote |
cytoplasm
mitochondrial matrix mitochondrial membrane |
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cho catabolism occurs in:
prokaryote |
cytoplasm
cytoplasm micochondrial membrane |
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bacteria yield atp
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38
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eukaryote yield atp
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36
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E used for
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active transport
motility anabolis processes |
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fermentation
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= cellular E and NAD
release E from oxidation of organic molecules not require o2 not use krebs cycle or ETC organic mol as final electron acceptor |
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alternatives to glycolysis
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pentose phosphate pathway - use w/ glycolysis
entner-doudoroff pathway - instead of glycolysis |
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steps of aerobic respiration
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glycolysis
synthesis of acetyl CoA krebs cycle ETC chemiosmosis |
