Question

in the phospholipid bilayer, the fatty acid chains face
a the outside of the cell
b the inside of the cell
c the middle of the bilayer
d both the inside and outside of the cell

Explanation:

Phospholipids in the cell - membrane have a hydrophilic head and hydrophobic fatty - acid tails. The fatty - acid chains are hydrophobic and thus face each other in the middle of the bilayer to avoid water.

Answer:

c. the middle of the bilayer