chapters_13_14_15_outline2_spr09

chapters_13_14_15_outline2_spr09 - Aerobic respiration In...

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Aerobic respiration In aerobic respiration, the pair of electrons from NADH is passed through a series of intermediates to NADH is oxidized back to NAD+, Oxygen is the There are several types of intermediates that pass electrons from ___________________: flavoproteins cytochromes quinones iron-sulfur proteins These components make up an In prokaryotes, the ETC is in the In eukaryotes, the ETC is in the Electron transport chain- series of membrane associated electron carriers that carry electrons from the During electron transfer, electron transport systems conserve some of the released energy for the synthesis of Electron transport chain Different organisms have different ETC Some have more than Electrons are passed from one compound to the next At each step, some energy from the electrons is used to push cytoplasm cytoplasmic membrane periplasm NADH + H + NAD + 2e - 2e - 2H + 2e - 2e - 1/2 O 2 H 2 O iron- sulfur protein quinone Cyt b Cyt o H + 2H + flavoprotein
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Hydrogen ion gradient/proton motive force/chemiosmosis This creates a Outside of CM is now more This gradient is a source of ATPase ATPase- enzyme which adds a ATPase does this by allowing Energy is released by reducing the hydrogen ion gradient, this energy is used to make the high energy bond of ATP. Oxidative phosphorylation- process of using the Substrate-level vs. Oxidative Phosphorylation Substrate-level phosphorylation ATP is made by transferring a Oxidative phosphorylation Energy from a Respiration and Fermentation summary Fermentation- cytoplasm periplasm H + H + H + H + H + H + H + H + ATPase ADP + P i ATP H +
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Respiration- Anaerobic respiration Same process as aerobic respiration Electrons from NADH are passed down an ETC, losing energy at each step Energy is used to move Energy from hydrogen ion gradient is used by ATP ase to make ATP (oxidative phosphorylation) Difference- In anaerobic respiration, electron acceptors other than O2 such as nitrate, ferric iron, sulfate, and carbonate can function as terminal electron acceptors for energy generation. Chemolithotrophs use ___________________________ such as hydrogen sulfide, hydrogen gas, ferrous iron, and ammonia as primary ______________________. Aerobic or anaerobic respiration takes place, it just starts with an inorganic instead of organic molecule. Phototrophs use light to form a
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Alternatives to glycolysis Pentose-phosphate pathway Entner-Doudoroff pathway Pentose-phosphate pathway Named for ________________________________________________________ - ribulose, xylulose, and ribose- that are formed from G6P Used for production of Net Ribulose 1,5-bisphosphate (used in ___________________________) is made by phosphorylating a precursor from this pathway Entner-Doudoroff pathway
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This note was uploaded on 03/31/2009 for the course BIOL 2051 taught by Professor Brininstool during the Spring '07 term at LSU.

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chapters_13_14_15_outline2_spr09 - Aerobic respiration In...

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