Isomers - Enantiomers are molecules that are mirror images...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Isomers Different molecules that are composed of the same number and kinds of atoms are called isomers . Glucose and fructose (shown below) are both C 6 H 12 O 6 but the atoms are are arranged differently in each molecule. Three kinds of isomers are described below. Structural isomers differ in their overall construction as shown above for glucose and fructose. Geometric isomers maintain the same carbon skeleton but a double bond occurs between carbon atoms. The location of atoms bonded to a double-bonded carbon atom differs. The two molecules below are geometric isomers because the double bond cannot rotate. If the bond between the two carbon atoms below were a single bond, they would not be isomers because atoms attached by single bonds can rotate. The carbon atoms would be able to rotate from one orientation to another if the bond were a single bond.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Enantiomers are molecules that are mirror images of each other. The molecules shown below are enantiomers. Condensation In order to bond the two molecules shown below together, you must first remove a hydrogen from each one. This is necessary because carbon has a maximum of 4 bonds and hydrogen can have only one. In biological systems, macromolecules are often formed by removing H from one atom and OH from the other (see the diagram below). The H and the OH combine to form water. Small molecules (monomers) are therefore joined to build macromolecules by the removal of water. The diagram below shows that sucrose (a sugar) can be produced by a condensation reaction of glucose and fructose. Sucrose: This is called a condensation or dehydration reaction. Energy is required to form the bond....
View Full Document

This note was uploaded on 12/15/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.

Page1 / 2

Isomers - Enantiomers are molecules that are mirror images...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online