Changes

: A high [[water]] [[concentration]] means [[water]] with very little [[dissolve]]d [[salt]]s or [[sugar]]s. A low [[water]] [[concentration]] is [[water]] with a high [[concentration]] of [[salt]]s or [[sugar]]s in [[solution]].

: A [[Partially Permeable Membrane|partially permeable membrane]] is a [[membrane]] which only allows through certain [[molecule]]s. This is often small [[molecule]]s like [[water]] that can pass through but not larger [[molecule]]s like [[sugar]]. However, the [[Cell Membrane|cell membrane]] is selectively permeable which means it can control what [[molecule]]s pass through.