On the other hand, cell membranes restrict diffusion of highly charged molecules, such as ions, and large molecules, such as sugars and amino acids. The passage of these molecules relies on ...

Diffusion is the net movement of molecules from an area where they are at a higher concentration to areas where they are at a lower concentration. This is due to the random movement of the ...

Diffusion is the movement of particles from ... and is one of the ways substances can move across the cell membrane, into or out of the cell. Products of digestion, dissolved in water, can pass ...

A new process for sustainable lithium extraction could help to address the growing global demand for the metals used in electric vehicle batteries and renewable energy storage.

Scientists have developed new membranes to extract lithium from salty lake water using electricity, an advance that could ...