ATP, redox, electron carriers pt 2 + cellular respiration overview

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10 Terms

1
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ATP

  • adenine, ribose, 3 P groups

  • major product of most catabolic pathways

  • major source of energy for most anabolic pathways

2
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ATP reaction hydrolysis & about it

  • ATP + H2O → ADP + Pi + energy

  • terminal (end) P group on ATP is unstable due to high concentration of negative charge

  • exergonic reaction, products r more stable

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phosphorylation

energy given off from ATP hydrolysis is immediately coupled with an endergonic reaction

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oxidation

loss of electrons/ lost H atoms or gains O atoms

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reduction

atom gains electrons/ H atoms gained or lost O atoms

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electron carrier reduction

  • NAD+ picks up 2 electrons & 1 H+ to be NADH

  • FAD picks up 2 electrons & 2 H+ to be FADH2

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obligate anaerobes

organisms that use molecules like NO2, SO4, CO2, Fe3+ to help facilitate respiration

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obligate aerobes

organisms that need oxygen to facilitate respiration eg humans

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facultative aerobes

organisms that are fine with/without oxygen

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goals of cellular respiration

  • breaking bonds of glucose to free carbon to make CO2 (waste)

  • breaking bonds of glucose to free hydrogen and form water

  • generate as much free energy as possible