Throughout the course of the class, I was fascinated and enamored with the utterly daunting series of highly complex physical and chemical interactions and subunits that all come together to allow for cells to function and preserve metabolic homeostasis. These interconnections were all impressive, however I found myself most drawn to the surprisingly important cellular membranes displayed in the course, both internal and external. Learning about how cells relied on these not only to ensure homeostatic conditions were maintained, but also for cell-to-cell communication, excretion and consumption of organic and inorganic materials, and the ways the cell went about performing all of these functions were truly incredible. Before the course I only thought the cell membrane served a minor role in regulation and metabolic function, but after this course I have scratched the surface of the immensely complicated true nature of this marvel of biology. As a hopeful future marine biologist, I will have to study this part of the cell much more extensively as with our rapidly changing environments brought on by climate change and human interference, the single-celled organisms responsible for the backbone of marine food production will no doubt have to modify their cellular membranes as a response to increased pollutants and nutrients present in the world’s oceans. I hope to learn more about this aspect of cellular biology, and am grateful for the foundation from which I will strive to learn more.