passive transport

the movement of substances across a cell membrane without expenditure of energy by the cell. It includes simple diffusion of ions through ion channels and facilitated diffusion of larger molecules assisted by transport proteins. Compare active transport.

Browse dictionary by letter

a b c d e f g h i j k l m n o p q r s t u v w x y z

Psychology term of the day

February 25th 2025

pyknodysostosis

n. see pycnodysostosis.