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Anaerobic Processes
Anaerobes
&
Fermentation
Anaerobic Respiration

Takes place without oxygen
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Performed by some prokaryotes living in
anaerobic environments
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Stagnant ponds
Intestines
Waterlogged soil
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Glycolysis begins process
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
ATP made (2 net)
NADH
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Electrons from NADH move down ETC
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Molecules other than O2 are final eacceptors
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NO3SO42-
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ETC coupled to ATP synthesis by
chemiosmosis
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End products of anaerobic respiration are:

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CO2
Reduced inorganic substances
ATP
Example:
C6H12O6 + 12 KNO3 
6 CO2 + 6 H2O + 12 KNO2 + ATP
Fermentation

Anaerobic pathway without ETC
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Performed by:
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Some bacteria
Fungi
Muscle cells
Only 2 ATPs made per glucose
Fermentation Overview
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Glycolysis cannot continue indefinately because
there is a limited # of NAD+
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Once all NAD+ is reduced to NADH, glycolysis
stops
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In fermentation, NADH transfer H to organic
molecules

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Regenerates NAD+
Keeps glycolysis going
2 Types of Fermentation