McCarter Biology

Biology IS Life

Kidney Dialysis and Selectively Permeable Membranes


dialysis tubing 2dialysis tubing

How do kidneys filter waste products from substances needed by the body? Your research team is challenged to test a newly developed dialysis tubing to determine its effectiveness. Should we use it in all of our new kidney dialysis machines???

Learning Goals:  To make a model of a cell with a selectively permeable membrane;  to observe the diffusion of a substance across the membrane; to use an indicator to determine the direction of diffusion;  to use mass as an indication of direction of osmosis and diffusion; calculate the rate of diffusion.

Key concepts: diffusion, osmosis, plasma membrane, selectively permeable, indicators or organic compounds, dialysis, osmotic pressure, measuring mass, making careful observations.

Kidney Dialysis Investigation Lab download


Skip to toolbar