Process requiring energy for the movement of particles across a cell membrane against the concentration gradient.

A solution that causes a cell to swell because of osmosis. The movement of water through a selectively permeable membrane from an area of high concentration to low concentration. A non-energy requiring process that moves materials across a cell membrane with the concentration gradient.

Ineed more info for this, i don’t quite understand what you’re asking.

Iguess i would say diagrams would be most difficult subject too correct