Biology for IGCSE & O level - Movement Into And Out Of Cells (Section 5 - No. 29)
What is the main driving force behind osmosis?
The concentration gradient of the solute.
The water potential gradient.
The pressure exerted by the solute.
The semi-permeable membrane.
Explanation
Osmosis is driven by the water potential gradient; water moves from an area of high water potential to an area of low water potential.
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