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PART1.

HOMEOSTASIS && CELL TRANSPORTATION

VOCABDEFINITION
Diffusion The movement of molecules from an area of higher concentration to an area of lower concentration. -example of passive transport example; a person walking down a hill. no energy required
Passive transport Any substance that can cross the cell membrane "WITHOUT ENERGY" ;no energy is required
Concentration gradient The difference of concentration of molecules across a distance.
equilibrium The concentration of the molecules will be the same throughout the space the molecules occupy. ;concentration remains the same.
osmosis The process by which water molecules diffuse across a cell membrane from an area of higher concentration to an area of lower concentration. ; no energy required. the direction in which water moves into or out of the cell.
hypotonic water moves into the cell and causes the cell to expand. before = o after --->0<---
hypertonic water leaves the cell and causes the cell to shrink before= O after <---o--->
istonic water exits and enters the cell causing the cell to stay the same size. before=O after=O
contractile vacuoles organelles that remove water. its collects and pumps out the water unlike diffusion and osmosis, energy is used because the cell is required to expend energy.
turgor pressure pressure water molecules use against the cell wall
plasmolyosis when turgor pressure is lost and cells shrink away from the cell wall. ;the reason plants wilt if they don't receive enough water.
Created by: Amazazingaly22
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