1. Anaerobic respiration
Cellular Respiration WITHOUT oxygen

2. Cellular Respiration
Recall that Cellular Respiration REQUIRES OXYGEN as one of its reactants
But what happens when ATP is needed and there is NO OXYGEN available?
Do you DIE?!?

3. Anaerobic Respiration
Aerobic – “with oxygen” AIRobic
Anaerobic – “without oxygen”
Anaerobic respiration happens when there is no oxygen available.
Does NOT make much ATP but it does happen VERY FAST!!
It is NOT the method we want to use…but it will keep us alive
Two types of anaerobic respiration:
Alcoholic fermentation
Lactic Acid fermentation

4. AEROBIC RESPIRATION ATP ATP ATP ATP ATP ATP ATP ATP ATP ATP ATP ATP
AEROBIC Respiration uses oxygen and produces a LOT of ATP
36 ATP for every glucose molecule
ANAEROBIC Respiration does not use oxygen and only produces a LITTLE ATP
2 ATP for every glucose molecule
ATP
ATP
ATP
ATP
ATP
ATP
ATP
ATP
ATP
ATP
ATP
ATP
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ATP

5. Types of Anaerobic Respiration
There are 2 types of ANAEROBIC respiration
The type that is done depends on the type of organism doing the respiration
Alcoholic fermentation – yeasts and other microorganisms
Produces alcohol and CO2
Lactic Acid fermentation – animals, like humans
Produces lactic acid and CO2

6. Alcoholic fermentation
Done by yeast and other microorganisms
Produces alcohol and CO2 as waste products
Bread is made this way
Bread Making Video

7. Alcohol…Harmful or Not?!?
YOU decide!!

8. The yeast are using the sugar to make ATP through ANAEROBIC respiration
The balloon fills up with CO2, which is a waste product

9. The holes in Bread are caused by pockets of CO2, as a result of anaerobic respiration

10. Lactic Acid fermentation
■ Done by animals, like humans
■Produces lactic acid and CO2 as waste products
▫Lactic acid builds up in the muscles and causes pain
Ouch
You’ve heard the saying… “Feel the Burn!!” The burn is caused by the acid building up in your muscles.