Question

6) p 53. List the functions of bacterial plasma membranes. Why must their plasma membranes carry out more functions than the plasma membranes of eukaryotic cells?

Answer 1

The primary function  of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins, the plasma membeane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.

Compartmentalization: Membranes are continuous,
unbroken sheets and, as such, inevitably enclose
compartments.

Scaffold or biochemical intersctioin:

Because of their construction, membranes
provide the cell with an extensive framework within which components can be ordered for effective interaction.

Providing a selectively permeiable membrane

Transporting solutes

Responding to external signals

Intercellular interactions

Energy transduction.

Eukaryotes have only membrane bound nucleai...