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Where does the energy that makes life possible come from? Humans obtain energy from three classes of fuel molecules: carbohydrates, lipids, and proteins.
- Cell Metabolism
Cells constantly adjust the flow of molecules through...
- Cell Energy, Cell Functions
Cells generate energy from the controlled breakdown of food...
- Cell Metabolism
During the chemical reactions of photosynthesis, energy is provided in the form of a very high-energy molecule called ATP, or adenosine triphosphate, which is the primary energy currency of all cells.
All living organisms need energy to grow and reproduce, maintain their structures, and respond to their environments; metabolism is the set of the processes that makes energy available for cellular processes.
27 Σεπ 2021 · During the light reactions of photosynthesis, energy is provided by a molecule called adenosine triphosphate (ATP), which is the primary energy currency of all cells. Just as the dollar is used as currency to buy goods, cells use molecules of ATP as energy currency to perform immediate work.
Together, all of the chemical reactions that take place inside cells, including those that consume or generate energy, are referred to as the cell’s metabolism. A living cell cannot store significant amounts of free energy. Free energy is energy that is not stored in molecules.
During the light reactions of photosynthesis, energy is provided by a molecule called adenosine triphosphate (ATP), which is the primary energy currency of all cells. Just as the dollar is used as currency to buy goods, cells use molecules of ATP as energy currency to perform immediate work.
Cells generate energy from the controlled breakdown of food molecules. Learn more about the energy-generating processes of glycolysis, the citric acid cycle, and oxidative phosphorylation.
