Chapter 19, Problem 19.85P

Interpretation Introduction

(a)

Interpretation:

Structures which are aligned with phospholipid should be identified from the given block diagrams.

  

Concept Introduction:

A phospholipid has a phosphorus atom in its lipid structure. Two types of phospholipids are available; phosphoacylglycerols and sphingomyelins.

Phosphoacylglycerols consist of two fatty acids, one phosphate group bonded with low molecular weight alcohol and one glycerol molecule in the structure.

Sphingomyelin derived from a sphingosine molecule that connects to a fatty acid molecule and a phosphate-containing alcohol molecule.

Interpretation Introduction

(b)

Interpretation:

Structures that are aligned with triacylglycerol should be identified from the given block diagrams.

  

Concept Introduction:

Simple triacylglycerol contains one glycerol molecule and three fatty acid molecules bind with ester bonds.

Interpretation Introduction

(c)

Interpretation:

Structures which are aligned with hydrolyzable lipid should be identified from the given block diagrams.

  

Concept Introduction:

In the presence of acid, base or enzyme, triacylglycerol molecules cleave the ester bonds in it and form fatty acids and glycerol.

  ${\text{Triacylglycerol + 3 H}}_{2}O+NaOH\to \text{Glycerol + 3 Fatty acids}$

Interpretation Introduction

(d)

Interpretation:

Structures that are aligned with sphingomyelin should be identified from the given block diagrams.

  

Concept Introduction:

Sphingomyelin derived from a sphingosine molecule that connects to a fatty acid molecule and a phosphate containing alcohol molecule.

Interpretation Introduction

(e)

Interpretation:

Structures that are aligned with phosphoacylglycerol should be identified from the given block diagrams.

  

Concept Introduction:

Phosphoacylglycerols consist of two fatty acids, one phosphate group bonded with a low molecular weight alcohol and one glycerol molecule in the structure.