| http://digfir-published.macmillanusa.com/hm_custom_osu/hmlsu_wischusen_f13_lab5.html | Chapter 2. Movement of Materials Across the Cell Membrane I
| 51dd841cb62f8b1f4e000004 |
| http://digfir-published.macmillanusa.com/hm_custom_osu/hmlsu_wischusen_f13_lab5_dlap.xml | DLAP questions | 51dd841cb62f8b1f4e000004 |