SECTION B (2 MARKS QUESTIONS)
Which of the following statements regarding membrane transport is FALSE?
A. Polar and charged solutes will not cross cell membranes effectively without specific protein carriers.
B. Each protein carrier will only bind and transport one (or a few very similar) type of solute.
C. Sugars such as glucose are always transported by active transport rather than by facilitated diffusion carriers.
D. Ions are typically transported by special proteins that form membrane channels.