MOVING MATERIALS INTO AND OUT OF CELLS

MATERIAL MOVEMENT PASSIVE TRANSPORT ACTIVE TRANSPORT

PASSIVE TRANSPORT DIFFUSION OSMOSIS

PASSIVE TRANSPORT PARTICLES PASSING THROUGH THE CELL MEMBRANE WITHOUT USING ENERGY

DIFFUSION MOVEMENT FROM AN AREA OF HIGHER CONCENTRATION TO AN AREA OF LOWER CONCENTRATION

DIFFUSION (CONTINUED)

DIFFUSION (CONTINUED) WHAT IS THE SOLUTE? WHAT IS THE SOLVENT? WHAT IS THE SOLUTION? WHAT IS EQUILIBRIUM?

OSMOSIS MOVEMENT OF WATER ACROSS A MEMBRANE

OSMOSIS (CONTINUED) RESULT OF OSMOSIS IS EXTRA MOLECULES COLLECT ON ONE SIDE OF THE MEMEBRANE PRESSURE EXERTED BY WATER MOLECULES IS OSMOTIC PRESSURE

OSMOSIS (CONTINUED) HYPOTONIC SOLUTION WATER CONCENTRATION HIGHER IN ENVIRONMENT THAN IN CELL WATER WILL MOVE INTO THE CELL

OSMOSIS (CONTINUED) HYPERTONIC SOLUTION WATER CONCENTRATION LOWER IN ENVIRONMENT THAN IN CELL WATER WILL MOVE OUT OF THE CELL

OSMOSIS (CONTINUED) ISOTONIC SOLUTION WATER CONCENTRATION SAME ON BOTH SIDES OF THE MEMBRANE WATER MOLECULES WILL MOVE INTO THE CELL AT THE SAME RATE AS THEY MOVE OUT

OSMOSIS (CONTINUED) LYSED = BREAK TURGID = SWOLLEN FLACCID = NOT FIRM SHRINK

FACILITATED DIFFUSION MEMBRANE CONTROLS WHAT CROSSES MEMBRANE IS REFERRED TO AS SELECTIVELY PERMEABLE

ACTIVE TRANSPORT

ACTIVE TRANSPORT ENERGY IS USED TO MOVE MATERIAL ACROSS THE MEMBRANE USUALLY FROM AREA OF LESSER CONCENTRATION TO AREA OF GREAT CONCENTRATION

ACTIVE TRANSPORT (CONTINUED) EXAMPLE: SODIUM-POTASSIUM PUMP MOVEMENT GLUCOSE INTO CELL: TYPCIALLY, CONC WILL BE GREATER IN CELL

Na+ MOVED AGAINST CONCENTRATION GRADIENT

ENDOCYTOSIS MOVEMENT OF MATERIAL INTO THE CELL Phagocytosis Pinocytosis Receptor-Mediated Endocytosis

EXOCYTOSIS MOVEMENT OF MATERIAL OUT OF THE CELL General animation of endocytosis and exocytosis