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Energy and Life

Energy and Life. Why is ATP useful to cells? What happens during the process of photosynthesis?. Cells need energy for…. Growing and developing Moving materials around Building new molecules Responding to environmental changes. Chemical Energy and ATP. Things need energy to move or go…

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Energy and Life

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  1. Energy and Life Why is ATP useful to cells? What happens during the process of photosynthesis?

  2. Cells need energy for… • Growing and developing • Moving materials around • Building new molecules • Responding to environmental changes

  3. Chemical Energy and ATP • Things need energy to move or go… • Why do these things need energy? • Car • Athlete • Computer • Appliances

  4. Chemical Energy and ATP • Even when you sleep your cells need energy, why and for what? • How are these things forms of energy? How do you know? • Light • Heat • Electricity

  5. Adenosine Triphosphate • How many Phosphates? • Cells use this to store and release energy

  6. Adenosine Diphosphate • How many Phosphates? • Like a rechargeable battery • Cells can use it to store energy, and when they need energy can add a phosphate to the compound

  7. Releasing Energy • Adding and subtracting of phosphate groups makes it an efficient way of storing and releasing energy when needed • ATP is a great useful source of energy for the cell because of it’s ability to gain and loose phosphates

  8. Using Biochemical Energy • Cells need ATP to carry out active transport…why? • Sodium Potassium Pump • Youtube • Also provides energy for movement (cilia and flagella) • Most cells only have a little ATP, enough to last just a few seconds of activity • Not a great molecule for storing energy over long periods of time • Glucose is much better, cane store over 90 times energy required to add Phosphate group to ADP

  9. Heterotrophs and autotrophs • Cells must somehow produce energy, they aren’t just born with it • Remember what a Heterotroph is? • How does it get it’s energy? • Remember what an Autotroph is? • How does it get it’s energy?

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