Flashcards: Water potential

Diffusion of water through a selectively permeable membrane down the water gradient

The tendency for water to move in or out of a system via osmosis

Relatively low concentration/ high water potential

higher concentration of solute/ lower water potential

equal concentration

Highest water potential psi 0

Solutes that lower the water potential

Provided by the cell wall pushing back and the hydrostatic pressure build on the inside

Plant cell that hold as much water a possible

Cytoplasm and membrane shrink and pull away from the membrane

Animal cell bursting

50% of the membrane and cytoplasm has plasmolyised

Solute potential = pressure potential

Water potential = solute potential

Water potential is greater than solute of external medium

Dissolves the phospholipids and membrane structure which creates large holes