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Structure and Function of Macromolecules Within a Living Organism

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Structure and function of macromolecules within a living organism ‘Some biological molecules in organisms are small and simple containing only one or a few functional groups, others are large, complex assemblies called macromolecules’ [1].

The term macromolecule is convenient because the bulk properties of a macromolecule differ from those of smaller molecules. These large chemical compounds have a high molecular weight consisting of a number of structural units linked together by covalent bonds, giving them a variety of structures and functions in the body. Macromolecules (also known as supermolecules) are commonly grouped into four major categories: proteins, nucleic acids, lipids and carbohydrates. These are mainly composed of …show more content…

It is often referred to as heredity material for its role in storing and transfering genetic material. The other form of nucleic acid is ribonucleic acid (RNA). RNA copies sections of the long molecules of DNA inside the nucleus, moving out to the rest of the cell to use the structure to direct the synthesis of proteins. The nucleotide sequence of the mRNA is translated into an amino acid sequence of a protein. in the polypeptide

Carbohydrates are a loosely defined group of molecules containing carbon, hydrogen, and oxygen in a 1:2:1 ratio. These compounds are produced naturally by green plants from carbon dioxide and water and are important as foods as they supply energy to the body and are used in the production of fats. There are three main classes of carbohydrates: monosaccharides, disaccharides and polysaccharides.

Monosaccharides are the simple sugars like fructose and glucose, whereas disaccharides include lactose, maltose, and sucrose. Upon hydrolysis, a disaccharide molecule yields two monosaccharide molecules. Polysaccharides include cellulose, dextrin, glycogen, and starch; they are polymeric compounds made up of the simple sugars and can be hydrolyzed to yield simple sugars. The disaccharides are sometimes grouped with the simpler polysaccharides (usually those made up of three or four simple sugar units) to form a class of carbohydrates called the oligosaccharides.

Like carbohydrates, lipids also contain carbon, hydrogen and oxygen but

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