Chapter 21, Problem 29A

Interpretation Introduction

Interpretation: The ring form of glucose and fructose needs to be sketched.

Concept Introduction: Monosaccharides are nothing but just simple sugars and the most basic units of carbohydrates.

Explanation of Solution

Sugar can exist in linear or ring (cyclic) form but when one draws the structure of sugar, generally linear structures are used.

The molecular formula of glucose and fructose is same but glucose has an aldehyde group and fructose has a ketone group.

The linear and cyclic form of glucose and fructose are represented as follows:

Linear forms:

  

  

Cyclic forms are as follows: