Week 3, Lecture 2, Cell Respiration

Week 3, Lecture 2, Cell Respiration - BIOLOGY BIOLOGY...

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B I O L O G Y 0 2 3 30-Dec-09 Gardiner Burning the Candle at Both Ends How Cells Extract Energy (ATP) form Sugars and other Energy Storage Molecules 3 Like Figure 6.5 30-Dec-09 Gardiner Cellular Respiration 1 The Nature of ATP No creature exists that does not use ATP as the energy molecule! 30-Dec-09 Gardiner 6 ATP – Rechargeable Battery • An analogy between ATP and rechargeable batteries • Recharged batteries can be used only after the input of additional energy • The input of additional energy (plus a phosphate group) "recharges" ADP into ATP (as in my analogy the spent batteries are recharged by the input of additional energy).
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Cellular Respiration Cellular Respiration •A catabolic, catabolic, exergonic exergonic , oxygen (O , oxygen (O 2 ) requiring process that uses energy energy extracted from macromolecules (glucose) macromolecules (glucose) to produce energy energy (ATP) (ATP) and water (H water (H 2 O). O). C 6 H 12 O 6 + 6O 2 6CO2 + 6H 2 O + energy glucose ATP Chemical Energy to Drive Metabolism • Autotrophs harvest sunlight and convert radiant energy into chemical energy. • Heterotrophs live off the energy produced by autotrophs. – extract energy from food via digestion and catabolism C 6 H 12 O 6 + 6O 2 ----> 6CO 2 + 6 H 2 0 + energy Cellular Respiration Photosynthesis B I O L O G Y 0 2 3 30-Dec-09 Gardiner 9 Bacteria – Autotrophs Autotrophs or or Heterotrophs Plants - Autotrophs Autotrophs : self-producers.
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Week 3, Lecture 2, Cell Respiration - BIOLOGY BIOLOGY...

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