1. Cellular Respiration & Fermentation Chapter 8

3. Cell Respiration All organisms need energy from food. They obtain this energy through a process called cellular respiration.

4. Remember ATP!!

5. THERE ARE 2 TYPES OF RESPIRATION!

6. Anaerobic Respiration(Fermentation) Uses NO OXYGEN and produces little energy from glucose – only 2ATP Starts with the process of GLYCOLYSIS in the CYTOPLASM C 6 H 12 O 6 + 2 ATP  2 pyruvic acid + 4 ATP (start up energy)(3-C Compound)(gain of 2 ATP)

7. Pyruvic Acid Breakdown in Some Organisms Break it down into waste products to be excreted Bacteria/Yeast – break it down into alcohol and CO 2 Mammal Muscle Cells – turns into lactic acid BOTH PROCESSES MAKE 2 ATP in the ABSENCE of OXYGEN

8. PAUSE FOR A DEMONSTRATION!!

9. Aerobic Respiration Requires the presence of Oxygen Takes place in the mitochondria COMPLETELY breaks down glucose molecule to generate large amounts of energy (36 ATP)

10. 2 Processes Involved in Aerobic Respiration Krebs (Citric Acid) Cycle Electron Transport Chain

11. Steps: First, Glycolysis occurs (in the cytoplasm) generating 2 Pyruvic Acids and 2 ATP Next, Oxygen is used to completely breakdown the pyruvic acid and make CO 2 and H 2 O as wastes and 34 more ATP As you can see this is MUCH more efficient than anaerobic respiration, WHY?