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In eukaryotic cells, in which organelle does the majority of cellular respiration (including the citric acid cycle and oxidative phosphorylation) occur?
A
Ribosome
B
Golgi apparatus
C
Lysosome
D
Mitochondrion
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1
Identify the main organelles involved in cellular metabolism within eukaryotic cells.
Recall that cellular respiration is the process by which cells convert biochemical energy from nutrients into ATP, the energy currency of the cell.
Understand that cellular respiration includes several stages: glycolysis (occurs in the cytoplasm), the citric acid cycle (also called the Krebs cycle), and oxidative phosphorylation.
Recognize that the citric acid cycle and oxidative phosphorylation specifically take place inside the mitochondrion, which is often called the powerhouse of the cell.
Conclude that among the options given, the mitochondrion is the organelle where the majority of cellular respiration, including the citric acid cycle and oxidative phosphorylation, occurs.