1. Ch. 9, Cellular Respiration We need food. When you’re hungry, you get weak, tired, cranky, irritable, and you could pass out! Eventually, you can die of hunger! So, when you’re hungry, your body is actually saying…. “ I need energy! Feed me!”

2. How do cells charge ADP back into ATP? Through breaking down food to produce energy. Food is used to “recharge” the batteries.

3. Cellular Respiration Cellular Respiration = process that releases energy by breaking down glucose (sugar) and other food molecules (O 2 present) 6O 2 + C 6 H 12 O 6 6CO 2 + 6H 2 O + Energy oxygen + glucoseCarbon dioxide + water + energy Equation for cellular Respiration: Write this equation, both lines! Yes! O 2 is present!!!

4. Hmm…Does this look familiar? 6CO 2 + 6H 2 O C 6 H 12 O 6 + 6O 2 light 6O 2 + C 6 H 12 O 6 6CO 2 + 6H 2 O + Energy oxygen + glucose Carbon dioxide + water + energy Cellular Respiration Photosynthesis It’s the exact opposite of photosynthesis!!!!

5. Cellular Respiration Happens in Stages… Glycolysis = produces 6 ATP molecules Krebs Cycle and the Electron Transport Chain = produce 30 ATP molecules Total number of ATP molecules produced by Cellular Respiration 36

6. ATP Production What is the net gain of ATP during glycolysis? 4

7. Who Does Cellular Respiration? Do plants have mitochondria? Yes! They do. Do animals have mitochondria? Yes! They do too. Cellular Respiration happens in plants and animals, or in all Eukaryotes Plants make glucose and other carbohydrates using the Sun’s energy, (photosynthesis), and they use these sugars just as we do, to make energy to be used for life processes Write extra notes at the top of your page

8. Energy and You What is energy? -Energy is the ability to do work. Work= life processes Where do WE get our energy? -From foods we eat. What happens to the food we eat? - It’s broken down into energy by cellular respiration.

9. Cellular Respiration occurs in the mitochondria

10. Cellular Respiration Because cellular respiration requires oxygen, it is said to be aerobic. It provides long term energy for the cells. 6O 2 + C 6 H 12 O 6 6CO 2 + 6H 2 O + Energy

11. Fermentation Sometimes your body needs energy very quickly….. When this occurs there is not enough time or oxygen available for cellular respiration, so your body switches to fermentation. Fermentation releases energy from food molecules by producing ATP in the absence of oxygen. Because fermentation does not require oxygen, it is said to be anerobic. But it comes at a price!!

12. On page 33 of your spiral…. Copy the mitochondria diagram from page 222 and the ATP production chart from page 229. Color and Label.