Cell Biology Class Reader
PDF · Page 23
“Oxygen is small and nonpolar, so it diffuses through the plasma membrane down its concentration gradient.”
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Cell Biology Class Reader
PDF · Page 23
How does oxygen enter a cell during cellular respiration?
Oxygen diffuses across the cell (plasma) membrane down its concentration gradient into the cytoplasm, where it continues to the mitochondria. There, it diffuses across the outer and inner mitochondrial membranes into the matrix, where it is used as the final electron acceptor in the electron transport chain.
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Cell Biology Class Reader
PDF · Page 23
“Oxygen is small and nonpolar, so it diffuses through the plasma membrane down its concentration gradient.”
Respiration Lecture Notes
Notes · Page 4
“Oxygen then diffuses across the outer and inner mitochondrial membranes into the matrix, where it acts as the final electron acceptor.”
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