Osmosis describes the movement of water across a biological membrane and down its concentration gradient. in chemiosmosis, useful energy is harnessed by the cell from the movement of across the inner mitochondrial membrane into the matrix a concentration gradient.

Osmosis describes the movement of water across a biological membrane and down its concentration gradient. In chemiosmosis, useful energy is harnessed by the cell from the movement of ions across the inner mitochondrial membrane into the matrix intermemberane space a concentration gradient.

Explanation:

substitution is the answer in this case

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