If a cell membrane lacking integral proteins is prepared by the freeze-fracture technique and examined under the electron microscope, the exposed interior of the membrane bilayer will
A) reveal a bumpy surface.
B) show hydrophobic side chains.
C) show an asymmetric distribution of proteins.
D) show cytoskeletal anchors.
E) look smooth.

Question

Quizplus · Accepted Answer

Integral proteins are embedded within the membrane bilayer, so if they are lacking, the exposed interior of the membrane bilayer will look smooth under the electron microscope. The other choices are not relevant to the absence of integral proteins.

If a Cell Membrane Lacking Integral Proteins Is Prepared by the Freeze-Fracture