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(B) Mitochondria are known as the powerhouses of the cell because they generate most of the cell's supply of adenosine triphosphate $(ATP)$.This energ

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Oxidizing substrates of $TCA$ cycle

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(B) Mitochondria are known as the powerhouses of the cell because they generate most of the cell's supply of adenosine triphosphate $(ATP)$.This energy is produced through the process of aerobic respiration.The primary substrates for this process are derived from the $TCA$ cycle (also known as the Krebs cycle),where substrates are oxidized to release high-energy electrons.These electrons are then used in the electron transport chain to create a proton gradient,which drives the synthesis of $ATP$ via oxidative phosphorylation.Therefore,the oxidation of substrates in the $TCA$ cycle is the key step in energy production.

Mitochondria supply most of the necessary biological energy by

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