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6.3 How is cell energy transported within cells?
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Mapa Mental sobre 6.3 How is cell energy transported within cells?, criado por María Daniela Portillo Ortiz em 13-07-2021.
Mapa Mental por
María Daniela Portillo Ortiz
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6.3 How is cell energy transported within cells?
transportation of energy in cells
glucose is the energy provider, energy from glucose is transferred to energy carrier-molecules
energy carrier-molecules are high-energy molecules that are synthesized at the site for an exergonic reaction
like rechargeable batteries
energy carrier-molecules only transfer and capture energy within cells
ATP and electron carriers transport energy within cells
ATP adenosine triphosphate is the most common energy-carrier molecule in the body is produced during the breaking down of exergonic reactions
called "energy currency" of cells
most ATP is produced in the mitochondria. Mitochondria is known as the power house of the cell
not a long-term energy-storage molecule: life time in cell is short; it's recycled about 1,400 times a day
ADP adenosine diphosphate
ADP to ATP, endergonic reaction
electron carriers
capture energetic electrons along with hydrogen ions (H+)
energetic electrons gain the energy from exergonic reactions, in which glucose breakdown and sun capturing in photosynthesis happen
carries energy and transfers their high energy electrons to other molecules to form ATP, NADPH, FADH2
coupled reactions link exergonic with endergonic reactions
coupled reaction
an exergonic reaction provides the energy needed to drive an endergonic reaction using ATP electron carriers as intermediates
ATP are a must because exergonic and endergonic reactions occur in different places within a cell
energy is lost as heat in this process of transformation
Energy released by exergonic reactions must exceed the energy needed to drive the endergonic reaction
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