Chapter 24, Problem 81A

(a)

Interpretation Introduction

Interpretation: The biological molecule has to be identified.

Concept Introduction: The most vital organic molecules, biomolecules are engaged in the maintenance and metabolic functions of living things. These inert molecules are the true foot soldiers in the fight for life's nourishment.

Answer to Problem 81A

The given biological molecule is triglyceride.

Explanation of Solution

The major type of biological molecules are carbohydrates, lipids, nucleic acids and proteins.

The given biological molecule is triglyceride.

It is characterized by a glycerol backbone attached to 33 fatty acid chains.

Three molecules of one or more distinct fatty acids are bonded to the alcohol glycerol to form triglycerides, which are esters.

The tissues can use fatty acids for energy production or they can be stored as energy in the form of triglycerides.

In response to energy needs, the stored triglycerides are broken down, and the unsaturated fatty acids are then released into the bloodstream and supplied to the tissues.

(b)

Interpretation Introduction

Interpretation: The biological molecule has to be identified.

Concept Introduction: The most vital organic molecules, biomolecules are engaged in the maintenance and metabolic functions of living things. These inert molecules are the true foot soldiers in the fight for life's nourishment.

Answer to Problem 81A

The given biological molecule is glucose.

Explanation of Solution

The major type of biological molecules are carbohydrates, lipids, nucleic acids, and proteins.

The given biological molecule belongs to carbohydrates.

It is glucose, a monosaccharide.

A class of chemical substances known as carbohydrates can be found in foods and living tissues as starch, cellulose, and sugars.

(c)

Interpretation Introduction

Interpretation: The biological molecule has to be identified.

Concept Introduction: The most vital organic molecules, biomolecules are engaged in the maintenance and metabolic functions of living things. These inert molecules are the true foot soldiers in the fight for life's nourishment.

Answer to Problem 81A

The given biological molecule is dipeptide.

Explanation of Solution

The major type of biological molecules are carbohydrates, lipids, nucleic acids and proteins.

The given biological molecule is a dipeptide.

There is the presence of amide and amine groups.

In nature, amide bonds hold together short chains of amino acid monomers to form peptides.