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18a: Overview ETOP

  • Page ID
    150554
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    Name: ______________________________

    Section: _____________________________

    Student ID#:__________________________

    Standard Reduction Potentials (E0'), 25oC

    Untitled-1.jpg

    Oxidative Phosphorylation Overview

    Overview

    • Glycolysis (cytosol) and TCA cycle (mitochondria) convert glucose to high energy molecules: ________ and ___________ and __________.

    This is just the beginning of energy production. NADH and FADH2 can be converted to more ATP. Oxidative phosphorylation is a metabolic pathway that transfers energy from NADH to the synthesis of ATP in the mitochondria.

    • NADH oxidation occurs over many steps. Why don’t cells do this reaction directly? (Hint: This is a hydride reaction!)

    Cellular Location

    Electrons stored in the form of the reduced coenzymes, NADH or FADH2, are passed through a chain of proteins and coenzymes to reduce O2 – the terminal electron acceptor – into H2O.

    • NADH is formed at what point in metabolism: ___________.

    • The TCA cycle occurs in __________.

    • This electron transfer of oxidative phosphorylation occurs in ________________.

    ATP production

    The energy released by electrons flowing through this electron transport chain is used to transport protons to generate a pH gradient across the membrane.

    • The phosphorylation of ADP to form ATP is [endothermic or exothermic].

    • Protons to flow back across the membrane to restore equilibrium. This process is [diffusion or active transport ] and can drive a reaction.


    This page titled 18a: Overview ETOP is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Kate Graham.

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