Question

the main lipids found in cell membranes are phospholipids. waxes. triglycerides. glycerol. steroids.

Explanation:

Cell membranes are composed of a phospholipid bilayer. Phospholipids have a hydrophilic (water - loving) head and hydrophobic (water - fearing) tails. This structure allows them to form a barrier that is selectively permeable. Waxes are more associated with waterproofing (e.g., in plant cuticles). Triglycerides are energy - storage molecules (fats). Glycerol is a component of triglycerides and phospholipids but is not the main lipid in cell membranes. Steroids like cholesterol can be found in cell membranes (in animals) but are not the main lipid component. The main lipid is phospholipids.

Answer:

phospholipids.