Question

a biologist is studying a structure that is made up of two layers of phospholipids. what is she most likely studying? dna molecules cell membranes fats wax

Explanation:

Cell membranes are composed of a phospholipid - bilayer structure. DNA molecules are made of nucleotides, fats are triglycerides, and waxes are esters of fatty acids and long - chain alcohols.

Answer:

B. cell membranes