Examlex
The number of people in poverty in 2015 was _____,and the poverty rate was _____.
Concentration Gradient
The gradual difference in the concentration of solutes in a solution between two regions, often leading to the movement of molecules along the gradient during diffusion.
Molecules
The smallest unit of a chemical compound that can exist while retaining the properties of that compound.
Osmosis
The movement of water molecules through a semi-permeable membrane from a region of lower solute concentration to one of higher concentration, aiming to equalize concentrations.
Selectively Permeable Membrane
A type of biological or synthetic membrane that aids in the selective transfer of substances in and out of cells.
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