MICRO CH16and17

MICRO CH16and17 - At this point, pyruvate can either be...

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At this point, pyruvate can either be used: in in Fermentation vs. Respiration Fermentation from 1 glucose molecule a net of 2 ATP are produced partial reduction of fermentation products Respiration from 1 glucose molecule up to 38 ATP are produced complete oxidation of pyruvate by uses Fermentation During fermentation, During glycolysis, electrons from glucose are passed to 2 NAD+ creating 2 NADH In fermentation, electrons from NADH are passed to In this process (glycolysis followed by fermentation reactions), net gain of 2 ATP are made by Types of fermentation 1. Homolactic fermentation- once electrons from NADH are passed to Ex. Lactobacillus ferments lactose sugar in milk to produce
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2. Alcoholic fermentation - once electrons are passed from NADH to pyruvate, Ex. Yeast ferment the sugar in malted grains to produce In both types of fermentation, the electron donor is Fermentation- energy generating process where one organic compound (ex.glucose) serves as the electron donor and a product of that compound serves as the electron acceptor (ex.pyruvate). Respiration Some chemoheterotrophs can use oxygen or other compounds from the environment to If electron acceptor is oxygen, process is called aerobic respiration If electron acceptor is other compound from environment, process is called anaerobic respiration final electron acceptor may be an inorganic compound such as nitrate, In fermentation, the final electron acceptor is made by the cell from the electron donor (ex. Pyruvate made form glucose In respiration, the final electron acceptor is a compound found in the environment (ex. Oxygen, nitrate The tricarboxylic acid (TCA) cycle aka- Kreb’s cycle, citric acid cycle cyclic pathway used to fully End products: CO2 (waste product)
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Precursor metabolites Occurs during ______________________ completely to CO 2 Only possible with Respiration produces more energy than fermentation ________________________________ complex Converts pyruvate to acetyl-CoA Substrate for TCA is Precursor metabolites made in TCA cycle: Reactions of the TCA cycle Acetyl CoA + oxaloacetate= During this cycle, acetyl CoA is oxidized to CO 2 ________________ released _________________________________ are generated precursor metabolites are See Fig 13.27 Aromatic Catabolism Bacteria can degrade many compounds Pseudomonas , Rhodococcus ________________ compounds converted to Allows growth in Used for Cleaning up Cleaning industrial sites Degrading 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+,
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Oxygen is the There are several types of intermediates that pass electrons from
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MICRO CH16and17 - At this point, pyruvate can either be...

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