Who was/were the first to propose that cell membranes are phospholipid bilayers? 13:45 Membrane Structure and Function Who was/were the first to propose that cell membranes are phospholipid bilayers? A) H. Davson and J. Danielli B) I. Langmuir C) C. Overton D) S. Singer and G. Nicolson E) E. Gorter and F. Grendel Answer: E Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+