Examlex
In recombinant DNA technology,YAC,RFLP,and λ have identical uses.
Active Transport
The migration of molecules from a lower concentration zone to a higher concentration zone across a cell's membrane, an action that requires energy.
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.
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