Target: Demonstrate Osmosis in a plant cell in a solution of lower concentration of water compared to the onion cell. How: After making a wet mount of a red onion cell, draw a 10% NaCl solution across a slide to cause water to leave the cell. Procedure: Wet Mount of Onion Cell Bring a slide […]
Target: Explain why water moves across a semi permeable membrane whereas other molecules do not. Also, explain what determines the overall direction that water moves. How: De-calcify an egg making it a semi permeable membrane, then place the egg in different solutions while predicting, measuring changes, and concluding reasons for the changes in the egg […]
The following are helpful resources for understanding the concepts in cell transport (movement of molecules across the cell membrane) Extra Credit Extension: Draw a cell membrane demonstrating diffusion, facilitated diffusion, and active transport. Include the following in your diagram: *energy required (ATP) or not*concentration gradient needed (high to low or can move low to high) […]
http://www.npr.org/blogs/goatsandsoda/2014/09/12/346114454/how-do-you-catch-ebola-by-air-sweat-or-water Error in article: viruses are not cells. They do not have cell membranes, though they do have a semi permeable outer layer. The outer layer of a virus is protein.