Carbohydrates‚ Proteins‚ lipids‚ and nucleic Acid Lab Exercise 6 Date: 9/17/12 Bio 102-11 Purpose the purpose of this experiment was to perform test to detect the presence of carbohydrates‚ proteins‚ lipids‚ and nucleic acids. Explain the importance of a positive and a negative control in biochemical test. Use biochemical test to identify an unknown compound. Background Most organic compounds in living organisms are carbohydrates‚ proteins‚ lipids‚ and nucleic acids they are called macromolecules
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Lady Jewellyn G.Diola*‚ Jennika Joy L. Casin‚ Andrian R. De Leon‚ Jan Rotsen Kyle A. Delos Santos Department of Chemistry‚ College of Science *Lady Jewellyn G. Diola; ladyjewellyndiola@yahoo.com Abstract Synthesis of 3‚4-dihydro-3-(p-methylphenyl)-1‚2-(2h)-benzoxazine involves the nucleophillic addition of the 1 °amine group upon the carbonyly group of the salicylaldehyde‚ the reduction of imine to amine and the addition of paraformaldehyde to proceed ring closure. The
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Adam Holena Physiology Venom Research Paper 5/2/2013 Crown of Thorns Starfish To many tourists the Great Barrier Reef is an exciting and relaxing destination to travel to. It holds beauty in its waters that are difficult to find anywhere else. Within the beauty however lies many varieties of marine organisms that all can inflict great harm to humans. One such organism is the Crown of thorns starfish (Acanthaster planci). When most people hear of the organism starfish‚ they think of this
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Increasing the temperature will not speed up the reaction as expected. Thus‚ a catalyst was needed as salicylic acid is stabilized by its benzene ring‚ with lone pairs from the carbonyl group and the hydroxyl group delocalizing with the electrons of the aromatic ring. In this case‚ we utilized sulfuric acid (H₂SO₄) as the reaction catalyst to speed up the reaction. While the reaction proceeded‚ the color of the reaction mixture
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aldehyde group of glucose is linked to the keto group of fructose and loses its reducing ability. The Benedict’s test is used as it allows the detection of the presence of reducing sugars. All monosaccharaides and some disaccharides which have exposed carbonyl groups will react with Benedict’s solution‚ whereas other disaccharides will not react with Benedict’s solution. The electrons from the aldehyde or ketone group of reducing sugar will react with the copper sulfate from the Benedict’s solution to
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HEALTH HAZARDS OF THE DYE INDUSTRY . The first step in prevention of poisoning in the dye industry includes well-ventilated‚ properly equipped buildings. Selection of workmen is important and the use of the best methods in manufacturing. These investigations‚ which are based on 2‚500 employees‚ whose blood was tested periodically‚ yield some minor diagnostic material. The hazards of the dye industry are those connected with any industry plus the poisonous chemicals necessarily handled in the
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benzoquinone compound manufactured naturally by the body and is found in most breathing organisms from bacteria to mammals. It was designated Coenzyme Q10 because of its quinone structure (any member of a class of cyclic organic compounds containing two carbonyl groups) and the ten isoprene (an unsaturated hydrocarbon) unit side chain. It was first identified in 1940 as a compound in the body by Professor Fredrick L. Crane while at the University of Wisconsin and later isolated in the heart of cows in 1957
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Carbohydrates & Glycobiology Dr. Jeelan Moghraby B.Sc.‚ D.Phil Assistant Professor Email: moghrabyj@ksau-hs.edu.sa Lecture 13 & 14 BIOC211 2013 Objectives Describe the structure of carbohydrates Classify the types of carbohydrates Recognise different types of glycoconjugates and their role Dr. Jeelan Moghraby Introduction Carbohydrates Most abundant organic molecule in nature Empirical formula (CH2O)n Originally produced from CO2 and H2O during
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Biology 113 Review sheet Chapter 2: * What is a compound and how is it different than an element? Compound is more than one element. An element cannot be broken down by chem. Rxns. * What are the 4 main elements of life? Why? C‚H‚O‚N they make up 96% of living matter and they are found in all of the major macromolecules * Be able to calculate the number of protons‚ neutrons and electrons given an element’s mass number or atomic number. If given this symbol - 4He – can you tell
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Then the analysis of the sample using H NMR and IR will determine purity of the product. Reaction Scheme: Mechanism: Fischer esterification is the acid catalyzed condensation of an alcohol and a carboxylic acid‚ where it is protonated at the carbonyl oxygen‚ then the nucleophillic attack of the alcohol. The proton
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