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