Biology Lab 3 Write Up

Biology Lab 3 Write Up - 2. In procedure 2 of this...

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Drew Rasmussen Penny Biology 191 Lab September 7, 2010 Lab #3 – Diffusion, Osmosis, and Membranes Pre-Lab Write-up 1. Define osmosis and diffusion. Be sure to indicate how these terms are interrelated. a. Osmosis is the movement of water from an area of high concentration to an area of low concentration. Diffusion is a less specific process that applies to anything moving from a high concentration to low concentration. Osmosis is a specific type of diffusion involving water.
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Unformatted text preview: 2. In procedure 2 of this laboratory exercise it is stated that a bag made of dialysis tubing simulates a cell. Explain. a. Dialysis tubing is composed of a permeable membrane meaning that molecules that are small enough (water for example) can move in and out of the tubing bag created in this experiment. Cells have a permeable membrane that is controlled by the nucleus, and they can take in or refuse certain molecules from coming into the cell....
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This note was uploaded on 01/18/2012 for the course BIOL 191L taught by Professor Dr.dottydouglass during the Fall '10 term at Boise State.

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