Biological Molecules
- Created by: milliejohnson8
- Created on: 30-04-18 17:58
Introduction to Biological Molecules
Bonding
- Covalent
- Ionic
- Hydrogen
Polymerisation
Monomers can be linked together to form long chains. Long chains of monomer sub-units are called polymers and the process is polymerisation.
Condensation and Hydrolysis Reactions
In the formation of polymers by polymerisation, each time a new sub-unit is added a molecule of water is formed. This is a condensation reaction.
Polymers can be broken by addition of water, breaking bonds linking sub-units of a polymer. This is a hydolysis reaction.
Metabolism
All the chemical processes that take place in the living organisms are collectively called metabolism.
Carbohydrates- Monosaccharides
Making large molecules
Examples of monomers include monosaccharides, amino acids, snd nucleotides. Monomers join together to form lomg chains polymers.
Monosaccharides
Sweet-tasting, soluble substances with general formula (CH2O)n. Examples of monosaccharides include glucose, galactose and fructose.
Test for reducing sugars
All monosaccharides and some disaccharides are reducing sugars. A reducing sugar can donate electrons to another chemical, in this case Benedicts Reagent.
Benedicts test: Alkaline solution of copper (II) sulphate. When a reducing sugar is heated with Benedicts reagent it forms an insoluble red…
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