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Energy And Life


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Energy And Life

  1. 1. Energy and Life<br />
  2. 2. Which one would you choose?<br />
  3. 3. What is the currency of the cell?<br />Understand ‘valuable’ vs. ‘usable’<br />The energy currency of cells is… Adenosine tri-phosphate. (ATP)<br />
  4. 4. ATP – Energy molecule<br />Energy is stored in the bonds.<br />ATP  ADP (+ P) and energy<br />
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  7. 7. ATP/ADP – Rechargeable battery<br />ATP – Fully Charged Battery<br />ADP – Partially Charged Battery<br />
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  9. 9. Electron Carriers/CoenzymesNAD and FAD<br />…Act as a shuttle…<br />…Are constantly being reduced and oxidized…<br />Reduced – gain electron(s)<br />Oxidized – lose electron(s)<br />In addition to the enzymes the cell needs, there are two coenzymes used in cellular respiration. They are:<br />Nicotinamide adenine dinucleotide (NAD+)<br />Flavine adenine dinucleotide (FAD)<br />
  10. 10. When reduced, NAD+ becomes…<br />…NADH (high energy molecule)<br />When oxidized, NADH becomes…<br />…NAD+<br />When reduced, FAD becomes…<br />…FADH2 (high energy molecule)<br />When oxidized, FADH2 becomes…<br />…FAD<br />Reduced coenzymes (FADH2 and NADH) are used to convert ADP  ATP. (They are good.) <br />