19. a) The below sugar is mannose. Determine if the mannose drawn is D or L. Describe how you determined this. ( be course O CH this HO-C-H HO -H H- TOH H- OH CH₂OH b). Draw this mannose as a B-pyrannose. ( HO -H H- -OH H- -OH CH₂OH видал Drown linear, A 1 nannase XH H CH₂OH OH H OH c) In your drawing above circle the location of the oxygen marked as A below. 11 CH HO-C-H * H iti 20. Explain what a thioester bond is and what it is used for in metabolic processes. Give an example of a molecule that contains a thioester bond. hand between thel and and alcohol
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- Following are Fischer projections for a group of five-carbon sugars, all of which are aldopentoses. Identify the pairs that are enantiomers. CHO сно H-C- OH H-C-OH H-C- OH но-с — н н-с—он но- ČHOH ČH,OH сно CHO Н-с—он но—с— н H-C- OH H-C-OH но—с—н Н-с—он ČHOH ČH,OH сно сно н-с—он но—с —н но—с— н но -с — н H-C- OH но- C-H ČH,OH ČH,OHFollowing are Fischer projections for a group of five-carbon sugars, all of which are aldopentoses. Identify the pairs that are enantiomers and the pairs that are epimers. (The sugars shown here are not all of the possible five-carbon sugars.) 1 СНО 2 СНО СНО Н-С—ОН Н-С—ОН Н—С—ОН Н-С—ОН НО —С—Н Н-С—ОН Н- С—ОН НО—С— Н НО—С—Н CH̟OH CH̟OH ČH̟OH в iоchemistry |61 STATE ATION Republic of the Philippines Romblon State University Romblan, Philippines 4 СНО 5 СНО 6 СНО НО—С—Н Н-С—ОН НО -С—Н Н—С—ОН НО -С—Н НО -С—Н H-C–OH Н-С—ОН НО—С—Н CH,OH ČH,OH CH,OHFollowing are Fischer projections for a group of five-carbon sugars, all of which are aldopentoses. Identify the pairs that are enantiomers and the pairs that are epimers СНО СНО СНО H-C-OH H-C-OH H-C-OH H-C-OH Но-С—н H-C-OH H-C-OH Но-ҫ—н Но—с—н CHOH CHĻOH ČH,OH СНО СНО СНО Но —С— н H-C-OH HO-C-H Н—С—он Но -С—н HO-C-H H-c-OH H-C-OH HO-C-H CH̟OH ČHĻOH ČHĻOH Pairs of Enantiomers Pairs of Epimers
- Write the name for the trisaccharide depicted below (for example, of the form a - D - xylofuranose). Be sure to include if the sugars are in the pyranose or furanose conformations in the name and include the linkages between sugars (for example, (2 - - > 4)). CH₂OH ОН OH н ОН -CH₂ H\H ОН н н ОН CH2OH н ОН но н н ОНComplete the following table by providing the Fischer and Haworth Projections of the given sugars. (Please be careful with the alpha and beta, and the complete and abbreviated) (not a graded question) Sugar Fischer Projection Haworth Projection (Complete) alpha-anomer Haworth Projection (Abbreviated) beta-anomer L-Galactose L-FructoseHelp me
- a) Draw amino acid (L- Cysteine) and determine the net chagre at each pH (1-3-7-10-13-) b) Calculate the pl for amino acid (Cysteine) 3. This question requires you to use an amino acid with an ionizable R group. Use the Amino Acids with lonizable R Groups chart to determine which amino acid you will be using. For student number 000123456; 2-6 and using the chart for Question 3 this corresponds to Glutamic Acid. Amino Acid 3=Z= pH 1 Draw the structure of L-amino acid 3 at the pH's in the table below and determine the net charge at each pH and the gl for amino acid 3. 10 Name of amino acid 3: 13 Cysteine Structure Net ChargeComplete the following table by providing the Fischer and Haworth Projections of the given sugars. In the Fischer Projection put an asterisk (*) mark in the chiral centers of the molecule. Sugar Fischer Projection Haworth Projection (Complete) alpha-anomer Haworth Projection (Abbreviated) beta-anomer L-Galactose L-Fructose D-Mannose D-Xylose L-LyxoseThe anomer of a-D-glucopyranose is CH:OH он ÓH CH2OH он он он он CH,OH он он он он CH,OH он OH он ÓH ÇH;OH он он он он
- Complete the following table by providing the Fischer and Haworth Projections of the given sugars. In the Fischer Projection put an asterisk (*) mark in the chiral centers of the molecule. Sugar Fischer Projection Haworth Projection (Complete) alpha-anomer Haworth Projection (Abbreviated) beta-anomer D-Mannose D-Xylose L-Lyxose2) Please draw a-mannose 1,4' B-talose.Draw a Fischer projection of L-fucose and L-hexose. What are the similarities in their structure?