BioTest1Esay6

BioTest1Esay6 - Essay 6 Compare in detail, using specific...

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Essay 6 Compare in detail, using specific molecular diagrams, the molecular structure of proteins, carbohydrates and lipids, indicating in detail how these structures result in their respective functions in biological systems. Proteins have numerous functions in biological systems, including storage, transport, structural support, and cellular communication. Proteins are constructed by polymers of amino acids. Each amino acid monomer is composed of a carboxyl group, amino group, hydrogen atom, and R group, all surrounding the center alpha-carbon of the amino acid. This varying R group is what distinguishes one amino acid from another, and thus determines the function of the protein. Shape determines function. Depending on the physical and chemical properties of the R group, an amino acid can be either polar or non-polar (Figure 5.17). An amino acid is characterized as an acid or base based on the electrical charge of its side chain. Acidic amino acids have R groups that are negatively charged, while basic amino acids have R groups that are positively charged. As charged molecules, these acidic and basic side chains are hydrophilic.
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This note was uploaded on 04/10/2008 for the course BIOL 103 taught by Professor Neale during the Fall '08 term at Georgetown.

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BioTest1Esay6 - Essay 6 Compare in detail, using specific...

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