Which scientists proposed the most widely accepted model of the cell membrane?

$A$ boy is studying the transport of a certain type of molecule into a cell. He finds that the transport slows down when the cells are poisoned with a chemical that inhibits energy production. Under normal circumstances,the molecules studied by the boy are probably transported by

The best material for the study of the structure of the cell membrane is:

Smaller,lipid-soluble molecules diffuse faster through the cell membrane,but the movement of hydrophilic substances is facilitated by certain transporters which are chemically $.......$

Discuss in detail the structure of the plasma membrane with a diagram.

How does Singer's model of the cell membrane differ from Robertson's model?