Osmosis with Hypertonic cells, Hypotonic, and Isotonic cells

Summary

This video describes how osmosis works, and what it does to cells. Osmosis is the the net movement of solvent molecules through a partially permeable membrane into a region of higher solute concentration, in order to equalize the solute concentrations on the two sides. It uses passive transport and osmosis is usually used with water.

In this video it mainly talks about  hypertonic cells, hypotonic cells, and isotonic cells. A hypotonic solution is a solution with a lower concentration of solutes. A cell in a hypotonic solution has a higher concentration of solutes than the surrounding solution, causing water to flow into the cell. Hypertonic refers to a higher concentration or has a greater degree of tone or tension. A cell in a hypertonic solution has a lower concentration of solutes than its surroundings, leading to a decrease of water in the cell. An isotonic solution is a solution in which its effective osmole concentration is the same as the solute concentration of another solution with which it is compared. This occurs, for example, when the concentration of both water and total solute molecules are the same in an external solution as in the cell content. Thse 3 conditions are all made by osmosis.

Relevence

This video is relevant to the class because we talked about osmosis in class on the notes and we had to do a homework outline on osmosis and hypertonic cells, hypotonic cells, and isotonic cells. It is important because we need to know how a cells diffuses if our unit is on cells.

Video Information

URL: http://www.youtube.com/watch?v=xFHfZE7eRbk

Date of Publication: October 2, 2012

Creator's Youtube username: Jung Choi