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Cellular Respiration Energy For Cells.

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Presentation on theme: "Cellular Respiration Energy For Cells."— Presentation transcript:

1 Cellular Respiration Energy For Cells

2 Cellular Respiration Energy is released by breaking the bonds of food molecules (such as glucose) to make ATP from ADP ADP = adenosine diphosphate ADP + Pi  ATP 2 types aerobic respiration anaerobic respiration

3 Cellular Respiration

4 Aerobic Respiration respiration that requires oxygen Three steps:
Glycolysis Krebs Cycle Electron Transport Chain

5 Aerobic Respiration C6H12O6 + 6O2  6CO2 + 6H2O
38 ATP are produced per molecule of glucose 2 ATP are used, so net ATP is 36 Some energy is lost as heat, so the actual number will be lower exergonic reaction – energy is released

6 Glycolysis Occurs in the cytoplasm “splitting sugar” Inputs: Outputs:
glucose Outputs: Pyruvic acid NADH ATP

7 Krebs Cycle Occurs in the mitochondria Inputs: Outputs: Pyruvic acid

8 Electron Transport Chain
Occurs in the mitochondria Where most of the ATP is produced Inputs: NADH FADH2 O2 Outputs: ATP Water

9 Anaerobic Respiration
Takes place in the absence of oxygen Occurs in the cytoplasm Fewer ATP are produced – net ATP is 2 Similar to glycolysis with an extra step 2 types Lactic acid fermentation Alcoholic fermentation

10 Lactic Acid Fermentation
Enzymes break down a glucose molecule into two lactic acid molecules, making ATP C6H12O6  lactic acid This process causes the pain in muscle fatigue

11 Lactic Acid Fermentation

12 Alcoholic Fermentation
Enzymes break down a glucose molecule into ethanol and CO2, making ATP C6H12O6  2 ethanol + 2 CO2 This process is used… to produce alcohol in gasoline additives in baking

13 Alcoholic Fermentation

14 Photosynthesis vs. Respiration

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