Which of the Following Statements Is False

Multiple Choice

Which of the following statements is false?

A) The plasma membrane is more like a fluid than a solid.
B) The cell membrane is symmetrical, so it is impossible to identify which is the extracellular surface.
C) Calcium pumps move calcium ions across the membrane.
D) In a plasma membrane, proteins shift positions and phospholipids flex their tails.
E) There are functional differences between the two sides of the plasma membranes.