We thank Mike Moran for the idea behind this project and the development of the Membrane Turnover Exercise. We thank the biology faculty of the University of Central Arkansas for constructive criticism of this work and Loren Stearman for his help with our statistical analysis. The project described was supported by award number P20RR16460 from the National Center for Research Resources. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Center for Research Resources or the National Institutes of Health.