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9. In sugars that contain many chiral centers, only the chiral center that is most distant from the carbonyl carbon is designated as D (right) or L (left). Determine which of the structures below are D and L sugars. H-C-OH I H-C-OH I HIC-OH I CH₂OH D-Ribose - part 2 2013 HF and Company H con H HO-C-H I H-C-OH I HIC-OH I CH₂OH D-Arabinose D-Xylose HO-C-H D-Aldoses Five carbons H. HIC OH I HO-C-H I H-C-OH I CH₂OH H-C-OH T H-C-OH CH₂OH H 0 H-C-OH H-C-OH H-C-OH CH₂OH CH₂OH -Ribose -Arabinose-Xylose D-Lyxose IMPORTANT NOTE: most hexoses in living organism are D isomers. Thus, the D prefix is often omitted. DO NOT confuse this with amino acids. Remember that the most common amino acids in living organism are L isomers. L sugars are mirror images of D sugars. H-C-OH HO-C-H HO-C-H H-C-OH H-C-OH CH₂OH H 0 10. Sugars (monosaccharides) can be trioses, tetroses, pentoses, hexoses, heptoses, etc., depending on the number of carbons they have. Determine the number of carbons in the structures above (#9) and determine if they are trioses, tetroses, etc. H->-OH 1 HO-C-H HO-C-H I H-C-OH I CH₂OH D-Lyxose 11. Find the definition of the term EPIMER in page 223 of your book. Write the definition below: Epimers are sugars that CHO H-OH 12. The two sugars below are epimers of each other with respect to carbon number OH- H HOH H OH CH₂OH D-glucose CHO OH- H H OH H OH- H он OH CH₂OH L-glucose

9. In sugars that contain many chiral centers, only the chiral center that is most distant from the carbonyl carbon is designated as D (right) or L (left). Determine which of the structures below are D and L sugars. H-C-OH I H-C-OH I HIC-OH I CH₂OH D-Ribose - part 2 2013 HF and Company H con H HO-C-H I H-C-OH I HIC-OH I CH₂OH D-Arabinose D-Xylose HO-C-H D-Aldoses Five carbons H. HIC OH I HO-C-H I H-C-OH I CH₂OH H-C-OH T H-C-OH CH₂OH H 0 H-C-OH H-C-OH H-C-OH CH₂OH CH₂OH -Ribose -Arabinose-Xylose D-Lyxose IMPORTANT NOTE: most hexoses in living organism are D isomers. Thus, the D prefix is often omitted. DO NOT confuse this with amino acids. Remember that the most common amino acids in living organism are L isomers. L sugars are mirror images of D sugars. H-C-OH HO-C-H HO-C-H H-C-OH H-C-OH CH₂OH H 0 10. Sugars (monosaccharides) can be trioses, tetroses, pentoses, hexoses, heptoses, etc., depending on the number of carbons they have. Determine the number of carbons in the structures above (#9) and determine if they are trioses, tetroses, etc. H->-OH 1 HO-C-H HO-C-H I H-C-OH I CH₂OH D-Lyxose 11. Find the definition of the term EPIMER in page 223 of your book. Write the definition below: Epimers are sugars that CHO H-OH 12. The two sugars below are epimers of each other with respect to carbon number OH- H HOH H OH CH₂OH D-glucose CHO OH- H H OH H OH- H он OH CH₂OH L-glucose

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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F 9. In sugars that contain many chiral centers, only the chiral center that is most distant from the carbonyl carbon is designated as D (right) or L (left). Determine which of the structures below are D and L sugars. H-C-OH HIC OH H-C-OH I CH₂OH D-Ribose HO C-H H-C-OH H-C-OH I CH₂OH D-Arabinose H-C-OH HO-C-H H-C-OH H-C-OH T HO-C-H I H-C-OH I CH₂OH D-Xylose D-Aldoses Five carbons H-C-OH H-C-OH HO-C-H H-C-OH HO-C-H HO-C-H H-C-OH CH₂OH CH₂OH CH₂OH CH₂OH D-Ribose D-Arabinose D-Xylose D-Lyxose HO-C-H HO-C-H H- H-C-OH CHO IMPORTANT NOTE: most hexoses in living organism are D isomers. Thus, the D prefix is often omitted. DO NOT confuse this with amino acids. Remember that the most common amino acids in living organism are L isomers. L sugars are mirror images of D sugars. H-C-OH -OH 10. Sugars (monosaccharides) can be trioses, tetroses, pentoses, hexoses, heptoses, etc., depending on the number of carbons they have. Determine the number of carbons in the structures above (#9) and determine if they are trioses, tetroses, etc. он——н H-OH HOH 11. Find the definition of the term EPIMER in page 223 of your book. Write the definition below: Epimers are sugars that HIC-OH I CH₂OH CH₂OH D-Lyxose D-glucose 12. The two sugars below are epimers of each other with respect to carbon number CHO OH H H-OH OH-H OH H CH₂OH L-glucose
Transcribed Image Text:F 9. In sugars that contain many chiral centers, only the chiral center that is most distant from the carbonyl carbon is designated as D (right) or L (left). Determine which of the structures below are D and L sugars. H-C-OH HIC OH H-C-OH I CH₂OH D-Ribose HO C-H H-C-OH H-C-OH I CH₂OH D-Arabinose H-C-OH HO-C-H H-C-OH H-C-OH T HO-C-H I H-C-OH I CH₂OH D-Xylose D-Aldoses Five carbons H-C-OH H-C-OH HO-C-H H-C-OH HO-C-H HO-C-H H-C-OH CH₂OH CH₂OH CH₂OH CH₂OH D-Ribose D-Arabinose D-Xylose D-Lyxose HO-C-H HO-C-H H- H-C-OH CHO IMPORTANT NOTE: most hexoses in living organism are D isomers. Thus, the D prefix is often omitted. DO NOT confuse this with amino acids. Remember that the most common amino acids in living organism are L isomers. L sugars are mirror images of D sugars. H-C-OH -OH 10. Sugars (monosaccharides) can be trioses, tetroses, pentoses, hexoses, heptoses, etc., depending on the number of carbons they have. Determine the number of carbons in the structures above (#9) and determine if they are trioses, tetroses, etc. он——н H-OH HOH 11. Find the definition of the term EPIMER in page 223 of your book. Write the definition below: Epimers are sugars that HIC-OH I CH₂OH CH₂OH D-Lyxose D-glucose 12. The two sugars below are epimers of each other with respect to carbon number CHO OH H H-OH OH-H OH H CH₂OH L-glucose
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