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Multiple Choice
In eukaryotic cells, which organelle is the primary site where cellular respiration (including the citric acid cycle and oxidative phosphorylation) occurs?
A
Mitochondrion
B
Golgi apparatus
C
Ribosome
D
Nucleus
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1
Understand the process of cellular respiration, which includes glycolysis, the citric acid cycle (Krebs cycle), and oxidative phosphorylation.
Recall that glycolysis occurs in the cytoplasm, but the citric acid cycle and oxidative phosphorylation take place inside a specific organelle in eukaryotic cells.
Identify the organelle responsible for these processes by considering its structure, such as having an inner membrane where the electron transport chain is located.
Recognize that the mitochondrion is known as the 'powerhouse of the cell' because it is the primary site of the citric acid cycle and oxidative phosphorylation.
Conclude that among the options given (Golgi apparatus, Ribosome, Nucleus, Mitochondrion), the mitochondrion is the correct organelle where cellular respiration primarily occurs.