Question

in biological membranes, the phospholipids are arranged in a ____, with the ____. single layer; fatty acids facing the interior of the cell bilayer; fatty acids pointing toward each other single layer; phosphate - containing region facing the interior of the cell bilayer; fatty acids facing outward (away from each other) bilayer; phosphate groups in the interior of the membrane

Explanation:

Biological membranes have a phospholipid bilayer structure. Phospholipids have hydrophilic phosphate heads and hydrophobic fatty acid tails. The hydrophobic tails avoid water by pointing toward each other, while the hydrophilic heads face the aqueous environments inside and outside the cell.

Answer:

bilayer; fatty acids pointing toward each other