Biology The Chiral Molecules Essay - 1019 Words

CHAPTER 1 INTRODUCTION 1.1. Introduction Many biomolecules besides amino acid are chiral, which contain one or more asymmetric carbon. Recently, the studies of the chiral molecules in the biological assembly system have been a subject to an extensive research. In order to improve the biosensor detection level, several research has been carried out, especially in the electrochemistry based research. In this study, collagen is used with the combination of carbon nanotubes to create a new bio-composite compound. However, this new type of bio-composite compound for certain need to go through some analyzation in order to improve the condition of the new bio-composite produced. Collagen can act as a very good matrix when combined with the†¦show more content†¦In this project the MWNTs is used. Multi wall nanotubes are made up of multiple roll layered of graphene. It can come out either in the course of a coaxial assembly of SWNT similar to a coaxial line, or as a single sheet of graphite rolled into the form of a coil. The diameter of MWNTs is usually in the range of 5 nm to 50 nm while the interlayer distance is as close as the distance between graphene layers in graphite. MWNT is easily produced in high volume quantities compared to SWNT but the structure of MWNT isles understood as it possessed greater complexity and variety. So, the regions of structural imperfection may diminish its desirable properties. Figure 1.1 (a) Structures of MWNTs Figure 1.1 (b) SWNTs and MWNTs 1.2. Fundamentals of Voltammetry Technique 1.2.1 Three electrode system The three electrode system consists of the working electrode, a reference electrode, and the auxiliary electrode which made it important in Voltammetry. This three electrode plays an important role in the three electrode system. Reference electrode refers to the electrode that has a recognized electrode potential. Besides that, reference electrode can be used as a half cell. When the electrode acts as a half cell, the other half cell electrode potential can be discovered. There are two widely used reference electrode which is saturated calomelShow MoreRelatedImportance of Stereoisomers in a Biological System652 Words   |  3 Pagessubtle differences have wide sweeping implications. In living organisms chiral molecules are usually present in only one of their chiral forms. For Example the amino acids that make up proteins are only found as their L iosmers whereas glucose only occurs as its D isomer. Evolution has played a large role in this fact by favo uring one isomer over the other. This concept is easier to comprehend when you remember that the molecules that select an isomer to use (invariably proteins) are themselves isomersRead MoreSample Resume : School Of Science Health1613 Words   |  7 Pagesnot mark this assignment if the above declaration has not been signed. ADVANCED MEDICINAL CHEMISTRY 300891 PROTEIN STRUCTURE Molecular Biology and Biochemistry of protein structures Introduction Molecular Biology and Biochemistry is the investigation of the chemical foundation of life and corroborates all field of studies of biology.[8] Molecular biology and biochemistry provides humans the tools to understand the broad group of formations, purposes and connections of proteins and their significanceRead MoreStructure And Function Of Biology Essay2109 Words   |  9 PagesIntroduction Structure and function in Biology is a broad concept that can be explored within a diverse range of topics across the subject matter. 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(A) fresh fruit (B) rice (C) pasta (D) oatmeal (E) all of the above are significantRead MoreStudy of Sterospecificity in Mushroom Tyrosinase3571 Words   |  15 Pagesone type for the phenolic substrate and one type for the dioxygen molecule (Espin et al, 1998). Different tyrosinases from different sources have similar structural and functional characteristics (Robb, 1984). Some enzymes will bind to a variety of substrates, if the structure of the substrate is similar, where as others are extremely specific, and will distinguish between D and L isomers. Several monophenols and o-diphenols are chiral tyrosinase substrates such as 3,4-Dihydroxy-L-Phenylalanine (commonlyRead MoreArchaeology Notes19985 Words   |  80 Pagesprocess which uses the measurement of the decay rate of carbon protein amino acids to date once-living organic tissue. All living organisms have protein; which is made up of amino acids. All but one of these amino acids (glycine) has two different chiral forms (mirror images of each other). While an organism lives, their proteins are composed of only left-handed (laevo, or L) amino acids, but once the organism dies the left-handed amino acids slowly turn into right-handed (dextro or D) amino acids