Download 9.3 Fermentation

yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Biosynthesis wikipedia, lookup

Fatty acid synthesis wikipedia, lookup

Radical (chemistry) wikipedia, lookup

Basal metabolic rate wikipedia, lookup

Photosynthesis wikipedia, lookup

Photosynthetic reaction centre wikipedia, lookup

NADH:ubiquinone oxidoreductase (H+-translocating) wikipedia, lookup

Light-dependent reactions wikipedia, lookup

Electron transport chain wikipedia, lookup

Oxygen wikipedia, lookup

Metalloprotein wikipedia, lookup

Adenosine triphosphate wikipedia, lookup

Metabolism wikipedia, lookup

Hepoxilin wikipedia, lookup

Butyric acid wikipedia, lookup

Evolution of metal ions in biological systems wikipedia, lookup

Citric acid cycle wikipedia, lookup

Oxidative phosphorylation wikipedia, lookup

Nicotinamide adenine dinucleotide wikipedia, lookup

Microbial metabolism wikipedia, lookup

Biochemistry wikipedia, lookup

Glycolysis wikipedia, lookup

9.3 Fermentation
Life without oxygen?
• Cellular respiration only
happens when oxygen
is present
• What happens if oxygen
isn’t available?
I. Fermentation
• Glycolysis quickly
produces ATP without
• If too much ATP is made,
no more NAD+ are
– Eventually, no more ATP
can be made
• Electron chain only runs if
oxygen is present
I. Fermentation
• There is a pathway that can
make ATP without oxygen
• Fermentation: the process of
glycolysis and the anaerobic
pathway combined
• Without oxygen, fermentation
releases energy from food
molecules by producing ATP
I. Fermentation
• NADH becomes NAD+ by
giving electrons to pyruvic
• NAD+ can then be used for
glycolysis again
• Fermentation occurs in
A. Alcoholic Fermentation
• Yeasts and other microorganisms use alcoholic
• Used to make bread and alcoholic beverages
• Formula:
Pyruvic acid + NADH
Alcohol + CO2 + NAD+
B. Lactic Acid Fermentation
• Most organisms & you, carry out lactic acid
• Used in your muscles
• Give products like sour cream and yogurt their sour
• Formula:
Pyruvic acid + NADH
Lactic acid+ NAD+
What does it look like?