from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. That cannot permeate through a specified semipermeable membrane
Sorry, no etymologies found.
Some molecules move freely across the membrane, some are impermeant or very slowly permeant, and some move across the membrane depending upon pH.
Organelles are bounded by impermeant, lipid-rich membranes that ensure the physical and functional separation of vital biochemical processes.
When the researchers introduced its associated membrane-impermeant fluorogen, it bound to the FAP-tagged GPCR on the cell surface, emitting a bright fluorescent glow.
Our cells use a clever and rather lazy scheme: they compensate for the high internal concentration of essential proteins by creating a high external concentration of some other substance, which is impermeant to the cell membrane.