CoA‚ and with HMG‚ CoA and NADP+‚ provide the detailed view of the enzyme active site. Catalytic portions of human HMGR form tetramers. The individual monomers wind around each other in an intricate fashion. In the tetramer‚ the monomers are arranged in two dimers; each of which contains two active sites‚ which are formed by residues from both monomers (alpha and beta). The tetramer has a total of four active sites where two of them are formed by the first dimer (1)‚ and the second dimer (2) forms the
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with impregnation of polymer RASHMI R DEVI and T K MAJI* Department of Chemical Sciences‚ Tezpur University‚ Tezpur 784 028‚ India Abstract. Impregnation of rubber wood has been carried out under different conditions by using styrene as grafting monomer and glycidyl methacrylate (GMA) as crosslinker. Properties such as dimensional stability‚ water absorption‚ hardness‚ tensile strength‚ flexural strength‚ etc of the impregnated wood have been checked and found to be improved by incorporation of
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1. GUPTA‚ A.‚ BAJAJ‚ P.‚ & PALIWAL‚ D. (1998). Journal of Applied Polymer Science‚ 70(2703). Retrieved September 26‚ 2014. 2. Sreekumar‚ T.‚ & Sen‚ K. (2001). Effect of Reaction medium on Radical Polymerization of Acrylonitrile with Vinyl acids. Poly sci.‚ 79(1640). Retrieved September 26‚ 2014. 3. (n.d.). In http://www.pslc.ws/mactest/pan.htm. Retrieved September 26‚ 2014 4. Serkov‚ A.‚ & Radishevskii‚ M. (2008). Status and Prospects For Production Of Carbon Fibres Based on Polyacrylonitrile
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Sean Byrne Teacher Biology Honors 13 August 2014 Unit 1 Chapter 3 1) a. Monomers are small‚ simple molecules that when put together create carbon compounds‚ and polymers are molecules that consist of repeated units. b. Functional groups are made of clusters of atoms‚ while macromolecules are large polymers. c. A monosaccharide is a simple sugar‚ but a disaccharide is known as a double sugar‚ or two monosaccharaides. d. Long chains of amino acids are called polypeptides‚ and proteins are composed
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which is di –is the lactose‚ Carbohydrate is Mono- is the glucose (simple sugar)‚ Fat is a straight chain fatty acids that are saturated and is poly – I think. 2. The monomer for the protein is amino acid – milk has all 9-essential amino acids. The monomer for the carbohydrate is monosaccharide‚ which is a simple sugar. The monomer for the lipid is fatty acid in milk its triglyceride. I did not understand the nucleic acid formation in milk. 3. The molecular formula for the milk disaccharide is
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polymer structure: –CH2-CH2-CH2-CH2- CH2-CH2-CH2-CH2– a) Give the name of this low density polymer. b) What is the polymer identification code for this substance? c) Write the name and condensed structure of the monomer units of this polymer. d) Name two properties of this polymer. e) Name two uses for this type of polymer. 4. a) What is addition polymerisation? b) Polyethylene is an example of an addition polymer. Describe
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are the mystery powders? Period: 4 Asia Enoch Introduction: A carbohydrate is an immediate form of energy in your body. Monomers is smaller than a polymer. For carbohydrate the monomer is sugar and the polymer is a polysaccharides. Carbohydrates are important to our body because we need to use energy. The purpose of this lab is to figure which one is the monomer and which one is the polymer. Hypothesis: If I place two drops of iodine into the mystery powder‚ it would turn from brown to
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called monomers. Ex. plastics that have so changed society and the natural and synthetic fibers used in clothing are polymers. Classification of polymers Homopolymers - consist of repeated long chains or structures of the same monomer unit. Ex. PVC(polyvinyl chloride) Copolymers - polymers that consist of more than one molecule. Trimers - molecules consisting of 3 monomer units. Tetramers- 4 monomer-unit compounds polymerization In polymer chemistry‚ is a process of reacting monomer molecules
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similar subunits (monomers) a. Condensation synthesis- process by which links monomers into polymers 1. 1 water molecule is removed for each monomer added (one monomer loses a hydroxyl group and the other loses a hydrogen so that they are then able to bond covalently to each other) 2. Enzymes are needed 3. Energy is expended by both monomers 4. Anabolic – building blocks 5. Also known as a dehydration reaction b. Hydrolysis – process which separates polymers into monomers 1. 1 water molecule
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