te the structure for a generic triacylglyceride at pH 7.4.
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- Consider the following fatty acid attached below. a) What is the number convention for this fatty acid above, including the location of the double bond from the α carbon end? Remember to use the Δ (delta) in your answer for the double bond location b) What is the ω (omega) numbering of the double bond for the fatty acid above? c) What is the product after two hypothetical additional rounds of synthesis for the fatty acid? Remember that synthesis adds 2 carbons at a time to the carboxylic end.Write out the structures for the cofactors involved in the following biochemical reactions: a) Methylation. b) Amino acid decarboxylation. c) A Claisen reaction. d) Ketoacid decarboxylation. e) Aldehyde reduction s ils otvteimaoomate nglaas bns vilanebl (d ienoiamlalblos tom orls ylianabl (o uencioiqeb of ezed aldstiua s jang2 (b adullb diiw aem (OatHer) nihshsw ( otsibammi dainiw (OatHer) 1aubong wan alobizobyrd moiboe ordt nadw owxim1) Draw the structures and provide the systematic names of the following fatty acids (all double bonds are in cis- configuration).a) 24:0b) 18:3(Δ6,9,12)c) 20:3(Δ8,11,14)2) Define and briefly explain the process of saponification.3) Commercial vegetable oils are subjected to partial hydrogenation processing before they are made available on the market;a) Explain the importance of this partial hydrogenation on cooking oil.b) Give two reasons why un-hydrogenated vegetable oil is not suitable for cooking.c) What undesirable effect does partial hydrogenation cause?4) Platelet-activating factor and Prostacyclin are lipids that play roles affecting coagulation.a) Differentiate the roles of each aforementioned lipid with reference to coagulation. b) What specific type of lipids does each molecule belong to?5) Draw the structures of lecithin and cephalin, outlining the general features. 6) Explain the chemical importance of having 2-deoxy-D-ribose in DNA over D-ribose.7) Draw a schematic…
- One sample of the globular protein peroxidase is hydrolyzed by heating with 6 M HC1. A second sample is denatured by treatment with acetone. a) How does the peroxidase structure change during hydrolysis? Will this change the biological activity of peroxidase? b) How does the peroxidase structure change during denatur-ation? Will this change the biological activity of perox-idase? c) Are either of these processes likely to be reversible?Determine the Primary amino acid sequence of an Octapeptide Composition · Tyr , Arg,Pro, Lys ,Lys ,Met ,Trp,Phe N terminal 1 2 3 4 5 6 7 8 C terminal 1) Treatment with an Edman reagent gives a PTH-AA that shows a Yellow color with Ninhydrin. 2) Trypsin digestion of the Octapeptide gives tetepeptide, dipeptide, free Arg ,free Trp. 3)CNBr = pentapeptide and tripeptide. 4) chymotrysin - tetapeptide and two dipeptiele. The tetrapeptide contains an amino acid with an OH group in the side chain.In observing a Haworth or cyclohexane-chair representation of alpha-d-glucopyranose, the anomeric carbon can de best identified by: a) the carbon atom which is bonded to the most H atoms b) the carbon atom which is bonded to the least H atoms c) The carbon atom which has its OH group pointing down d) The carbon atom which is bonded to two oxygen atoms Cellulose differs from amylose in that: a) cellulose has 1-6 branches while amylose does not b) amylose has 1-6 branches while cellulose does not c) amylose has alpha glycosidic bonds while cellulose has beta glycosidic bonds d) cellulose contains sulfate while amylose does not. The glycosaminoglycan (mucopolysaccharide) which is not normally associated with joint tissue is: a) heparin b) keratan sulfate c) chondroitin sulfate d) hyaluronic acid In glycoproteins, which amino acid does not bond sugar molecules? a) Asn b) Ser c) Thr d) Gly Which feature do all lipid molecules share in common? a) fatty acid molecules…
- 1. (a) Draw a three-dimensional line structure of (4S,5Z)-4-amino-5,6-difluorohept-5-enal. Place the aldehyde group on the right-hand side of your drawing. (b) Give the Cahn-Ingold-Prelog priority order of the four groups (-C3H3F2. -NH2, -H, -C3H50) at the C4 stereocentre (Highest 1> 2> 3>4 Lowest). 2. Study the curved arrows in the reactions below and provide structures of all the products that form for the given mechanistic step in the following reactions. (a) +0-H (b) H.Carbohydrates Instructions: (A) Show the conversion from Fischer to Haworth projections. (B) Draw and give the systematic names of the two (2) possible Haworth structures for the following monosaccharides. 1. D- Fructose(a) A decapeptide has the following amino acid composition: Alaz, Arg, Cys, Glu, Gly, Leu, Lys, Phe, Val Partial hydrolysis yields the following tripeptides: Cys-Glu-Leu + Gly-Arg-Cys + Leu-Ala-Ala+ Lys-Val-Phe + Val-Phe-Gly. Reaction of the decapeptide with 2,4-dinitrofluorobenzene yields 2,4-dinitrophenylysine om the experimental data, deduce the primary structure of the decapeptide.
- Draw the Fischer projections representing the L forms of the following amino acids at pH higher than their isoelectric point. a) cysteine b) alanineRaffinose is a trisaccharide and a minor constituent in sugar beets. (a) Is raffinose a reducing sugar?Explain. (b) What are the monosaccharides that compose raffinose ? (c) β - Galactosidase is an enzyme that will remove galactose residues from an oligosaccharide. What are the products of β - galactosidase treatment of raffinose ?Draw the structure of: The polysaccharide in (b) is dextran, a component of dental plaque. Here b: (b) a polysaccharide formed by joining D-glucose units in 1→6-α-glycosidic linkages