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All living cells require energy and this energy is provided by the oxidation of glucose ­ respiration.




Why organisms need energy

Metabolism All the reactions that take place in living organisms
involve energy
Movement Both within an organisms and of the organism itself

Active transport Of ions and molecules against…

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The synthesis of ATP from ADP involves the addition of a phosphate molecule to ADP.

It occurs in three ways:
Synthesis of ATP
Photophosphorylation Takes place in chlorophyll-containing cells during photosynthesis


Oxidative phosphorylation Occurs in the mitochondria of plant and animal cells during the process of
electron transport
Substrate-level Occurs…

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