Chapter 23.3, Problem 19SSC

Interpretation Introduction

Interpretation:

The general structure of a phospholipid should be drawn. The polar and nonpolar parts of the structure should be labeled.

Concept introduction:

The molecules which contains hydrocarbons and not soluble in water but soluble in nonpolar solvents is known as lipid.

Lipids are classified as:

Triglycerides, Phospholipids and, Steroids and Waxes

Explanation of Solution

The type of lipid found in our blood is known as triglycerides whereas the type of lipid which is the main component of cell membrane is known as phospholipid.

General structure of phospholipids contains a glycerol molecule(s), phosphate group and two fatty acids. The type of lipid which is the main component of cell membrane is known as phospholipid. Phospholipid consists of two fatty acids and a phosphate group.

In the structure of Phospholipid, two fatty acids and a phosphate group linked with each other by ester bonds. In the structure of phospholipid, the end having a phosphate group is hydrophilic whereas chain of fatty acids is hydrophobic.

The structure of phospholipid with labeled polar and nonpolar part: