Download Lactic Acid Fermentation

Cellular Respiration
C6H12O6 + 6O2
enzymes
6CO2 + 6H2O + ATP
There are two types of cellular respiration:
AERBIC , which requires oxygen
ANAEROBIC, which occurs in the absence of
oxygen
GLYCOLYSIS
Glucose (C6H12O6) is broken down into a 6-carbon compound.
This is done using 2 ATP molecules and enzymes.
That 6-carbon compound is broken down into two 3-carbon compounds.
This results in the production of 2 NADH molecules.
The two 3-carbon compounds are converted into two Pyruvate molecules.
4 ATP molecules are also produced.
So basically, 2 ATP break apart a sugar, re-arrange it, and the end result is 4
ATP and 2 NADH. We use 2 ATP to do all this, so in reality, we gain 2 ATP
and 2 NADH overall.
GLYCOLYSIS VIDEO
ELECTRON TRANSPORT
CHAIN
ELECTRON TRANSPORT
• CHAIN
H+ ions are pumped from the inner membrane to the
outer membrane of the mitochondria
• Some of these H+ ions bond with oxygen to form water
molecules
• At the end of the chain, ATP is produced
Anaerobic Respiration
What do we do when there’s NO oxygen?
At the end of the Krebs Cycle, we bond hydrogen to oxygen to
create water. With that oxygen unavailable, we need to do
something else with that hydrogen!
We get it from NADH. Instead of binding it to oxygen, it sends it
BACK to glycolysis.
As long as we have glucose to break down, we can recycle the
NADH to make more ATP!
FERMENTATION
2 Types:
Lactic Acid Fermentation
• Pyruvate is converted to Lactate and used to continue to produce ATP as
long as glucose exists in the body
• Is responsible for the “burning” feeling in muscles, and post-workout
soreness if it is not removed from the muscles quickly enough by blood
flow
Alcoholic Fermentation
• Pyruvate is broken down into alcohol, releasing CO2
• Remaining molecules used to create ATP
• This process is done by yeast, and we use it to bake bread and make
alcoholic beverages
FULL CYCLE