Question

1. which type of lipid makes up cell membranes?

steroids
phospholipids
triglycerides
fatty acids

Explanation:

Cell membranes are composed of a phospholipid - bilayer. Phospholipids have a hydrophilic head and hydrophobic tails, which allow them to form a stable barrier for the cell. Steroids are different types of lipids with various functions like hormone - production, not the main component of cell membranes. Triglycerides are energy - storage molecules. Fatty acids are components of triglycerides and other lipids but not the main structure of cell membranes.

Answer:

phospholipids