passive transport
[ˈpæsɪv ˈtrænspɔrt]
nounpl: passive transports
transporte passivo
1. The movement of substances across a cell membrane without the use of cellular energy (ATP), relying on concentration gradients or osmotic pressure
Glucose enters the cell through passive transport via facilitated diffusion channels.
A glicose entra na célula através do transporte passivo via canais de difusão facilitada.
2. In general biology, the transfer of molecules or ions across a biological membrane driven by concentration differences rather than metabolic energy
Water molecules move across the cell membrane by passive transport during osmosis.
As moléculas de água se movem através da membrana celular por transporte passivo durante a osmose.
This is a fundamental concept in biology education taught worldwide, including in Brazilian and American schools. In the USA, it is a core topic in AP Biology and introductory college biology courses. In Brazil, it is part of the standard curriculum in high school (Ensino Médio) and university biology programs.
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