1. Aerobic Respiration

2. Aerobic starts with glycolysis
Stage 1 - Glycolysis. Takes place in the cytoplasm. Oxygen is not needed for this part
Here the glucose molecule is converted into 2 Pyruvic acid or Pyruvate molecules

4. Glycolysis Summary Important molecules produced -
4 ATP”s are made but 2 are needed so the net yield is 2 ATP molecules
_____NAD_______ is the electron carrier… remember this will carry energy to be used later
____Pyruvate _ will either enter the next stage of respiration where it will move into the Mitochondria
to further break down the pyruvate and produce more ATP

6. breathe out. Krebs Cycle- generates a pool of chemical energy –
ATP , NADH and FADH
NADH and FADH are
electron carries…
they carry energy to the
last stage of aerobic
respiration –
The Electron Transport
Chain.
The CO2 That is released is what
breathe out.

7. Stage 3 Electron Transfer Chain
Transfer of hydrogen from each NADH2 along the inner membrane of the mitochondria.
This builds up a gradient. (similar to a water fall) It release enough energy to bond an ADP to P to make ATP. (ultimate goal)
The oxygen will accept the electron given by the NADH.
At the end… the Hydrogen will combine with oxygen to form water.

8. THE ROLE OF OXYGEN It is the final electron acceptor.
If the oxygen is not there the production of ATP will stop.
If ATP production stops…. Organs shut down, brain function shuts down…
Fill in summary sheet

11. Anaerobic Respiration
The transfer of energy without oxygen
A common anaerobic process is fermentation.
Fermentation is not an efficient process and results in the formation of far fewer ATP molecules than aerobic respiration.
There are two primary fermentation processes:
Lactic Acid Fermentation
Alcohol Fermentation

12. Lactic acid fermentation occurs when oxygen is not available.
For example, in muscle tissues during rapid and vigorous exercise, muscle cells may be depleted of oxygen. They then switch from respiration to fermentation.

13. No more ATP is made after glycolysis NET YIELD = 2 ATP
Not enough to keep going
When you exercise vigorously Lactic acid builds up in the tissue causing a burning, painful sensation.

14. Alcohol fermentation occurs in yeasts and some bacteria.
Pyruvic acid formed during glycolysis is broken down to produce alcohol and carbon dioxide and is released.

15. Alcoholic Fermentation

16. Fermentation is used in food production.
Yogurt - Soy Sauce
Cheese - Vinegar
Bread - Olives/Pickles
Beer/ Meade - Wine/ Ale
Sauerkraut - Malt