Lecture 25 Fermentation Flashcards
Does fermentation require oxygen?
No
Can fermentation happen in the presence of oxygen?
Yes
Does fermentation use the Krebs cycle or ETC?
No
In fermentation, what is used as the final electron acceptor?
pyruvate (or a derivative)
Femernation
a mechanism for regeneration NAD+ from NADH
Why does fermentation produce less ATP than cellular respiration?
few energy rich-bonds are broken
What are the two types of fermentation?
lactic acid fermentation and alcohol fermentation
What does alcohol fermentation produce?
produces ethanol + CO2
What does lactic acid fermentation produce?
lactic acid
Homolactic fermentation
produces lactic acid only
Heterolactic fermentation
produces lactic acid and other compounds
What happens during ethanol fermentation to produce the ethanol?
pyruvate gets decarbozylated
Three components to beer production
malted barley, yeast (Saccharomyces), hops (antimicrobial, adds bitterness)