Which set correctly lists the three main components of a typical glycerophospholipid in the lipid bilayer?

• A. A sphingosine backbone, one fatty acid tail, and a nucleic acid head group
• B. A glycerol backbone, two fatty acid tails, and a phosphate-containing head group
• C. A glycerol backbone, a polysaccharide chain, and a phosphate group
• D. Three fatty acid tails and a steroid ring

Answer: (B)

Verified step by step guidance

1. Understand that glycerophospholipids are a major class of phospholipids found in the lipid bilayer of cell membranes.
2. Recall that the backbone of glycerophospholipids is glycerol, a three-carbon molecule that serves as the structural foundation.
3. Recognize that attached to the glycerol backbone are two fatty acid tails, which are hydrophobic and help form the interior of the membrane.
4. Identify that the third position on the glycerol backbone is linked to a phosphate-containing head group, which is hydrophilic and interacts with the aqueous environment.
5. Conclude that the correct components of a typical glycerophospholipid are: a glycerol backbone, two fatty acid tails, and a phosphate-containing head group.