Question

In which direction does the head of the molecules of the plasma membrane face

A. Toward the head of another molecule

B. Toward the outside

C. Away from water

D. Toward the middle

Answer 1

The fatty acid tails of phospholipids face inside, away from water, whereas the phosphate heads face the outward aqueous side. Since the heads face outward, one layer is exposed to the interior of the cell and one layer is exposed to the exterior.

Step-by-step explanation: