Question

which of the following structures is principally composed of phospholipids?
o dna
o cytoskeleton
o ribosomes
o cell membrane

Explanation:

Phospholipids are the main components of the cell - membrane structure, forming a lipid bilayer. Ribosomes are made of RNA and proteins. The cytoskeleton is composed of protein filaments. DNA is made of nucleotides.

Answer:

A. Cell membrane