The most common way that cells produce energy is by the process of respiration where oxidation of glucose occurs which produces ATP (energy for the cells to use in other processes)
The most enery can be gained from beta-oxidation of fatty acids, however this is not used on a regular basis (just during exercise or starvation to conserve glucose for organs such as the brain or liver). It is not commonly used because the stores of fat take longer to build back up than the stores of glucose (which is stored as glycogen)
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Adenosine triphosphate (ATP) is the molecule that provides most of the energy for cellular processes.
Adenosine triphosphate (ATP) is the energy transport molecule most commonly associated with cellular respiration.
Adenosine triphosphate (ATP) is considered the most energy-rich small molecule in the cell. ATP is a nucleotide that serves as the primary energy currency in cells. It stores and transports chemical energy within cells for various metabolic processes, such as muscle contraction, active transport, and synthesis of biomolecules.
Oxygen is the molecule required for animal cells to obtain the most energy possible from a molecule of glucose through the process of cellular respiration. Oxygen is the final electron acceptor in the electron transport chain, which is essential for generating ATP, the cell's main energy source.
The bean-shaped organelle that supplies a cell's energy is the mitochondrion. Mitochondria are often referred to as the powerhouse of the cell because they are responsible for generating most of the cell's adenosine triphosphate (ATP), which is the molecule used by cells as a source of energy. Mitochondria have a double membrane structure and contain their own DNA.