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13. Observe the diagrams below. Which sugar(s) is(are) epimers of xylose? Specify the carbon that is involved. D-Aldoses Five carbons CHO CHO H- -OH OH H HICIOH HOIC-H HIC-OH HOIC-H он——н HOH 匯道盖盖盖重 HIC-OH HIC-OH HO-C-H HO -H HOH он———н HIC-OH H-C-OH HIC-OH HICIOH H -он OH- H CH₂OH CH₂OH CH₂OH CH₂OH CH₂OH CH₂OH D-Ribose D-Arabinose D-Xylose D-Lyxose D-glucose L-glucose 2013 Freeman and Compa 14. Observe the structures below and determine: a. Which is an epimer of glucose: galactose or fructose? b. Which is a ketose of glucose? H =0 H-C-OH HO-C-H HICIOH H-C-OH CH₂OH D-Glucose H-C-OH HO-C-H HO-C-H HIC-OH CH₂OH D-Galactose CH₂OH C=0 HO-C-H H___C_OH H-C-OH CH₂OH D-Fructose

13. Observe the diagrams below. Which sugar(s) is(are) epimers of xylose? Specify the carbon that is involved. D-Aldoses Five carbons CHO CHO H- -OH OH H HICIOH HOIC-H HIC-OH HOIC-H он——н HOH 匯道盖盖盖重 HIC-OH HIC-OH HO-C-H HO -H HOH он———н HIC-OH H-C-OH HIC-OH HICIOH H -он OH- H CH₂OH CH₂OH CH₂OH CH₂OH CH₂OH CH₂OH D-Ribose D-Arabinose D-Xylose D-Lyxose D-glucose L-glucose 2013 Freeman and Compa 14. Observe the structures below and determine: a. Which is an epimer of glucose: galactose or fructose? b. Which is a ketose of glucose? H =0 H-C-OH HO-C-H HICIOH H-C-OH CH₂OH D-Glucose H-C-OH HO-C-H HO-C-H HIC-OH CH₂OH D-Galactose CH₂OH C=0 HO-C-H H___C_OH H-C-OH CH₂OH D-Fructose

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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13. Observe the diagrams below. Which sugar(s) is(are) epimers of xylose? Specify the carbon that is involved. HICIOH HIC-OH HIC-OH CH₂OH D-Ribose Figure 7-3 part 2 2013 of chemistry Seth Edition Five carbons HO-C-H D-Aldoses H- -OH H -C-OH -OH CH₂OH CH₂OH D-Arabinose D-Xylose H-C-OH HO-C-H H-C-OH H-C-OH 0 H-C-OH HOICIH CH₂OH D-Glucose H но- C-H HO -H H -C-OH CH₂OH D-Lyxose 14. Observe the structures below and determine: H HIC-OH CHO HOH HO-C-H HO-C-H OH- a. Which is an epimer of glucose: galactose or fructose? b. Which is a ketose of glucose? H-C-OH CH₂OH D-Galactose H н——он HOH CH₂OH D-glucose CHO он———н H- он——н он——н CH₂OH L-glucose CH₂OH C=0 HO-C-H H - C_OH -OH H-C-OH CH₂OH D-Fructose
Transcribed Image Text:13. Observe the diagrams below. Which sugar(s) is(are) epimers of xylose? Specify the carbon that is involved. HICIOH HIC-OH HIC-OH CH₂OH D-Ribose Figure 7-3 part 2 2013 of chemistry Seth Edition Five carbons HO-C-H D-Aldoses H- -OH H -C-OH -OH CH₂OH CH₂OH D-Arabinose D-Xylose H-C-OH HO-C-H H-C-OH H-C-OH 0 H-C-OH HOICIH CH₂OH D-Glucose H но- C-H HO -H H -C-OH CH₂OH D-Lyxose 14. Observe the structures below and determine: H HIC-OH CHO HOH HO-C-H HO-C-H OH- a. Which is an epimer of glucose: galactose or fructose? b. Which is a ketose of glucose? H-C-OH CH₂OH D-Galactose H н——он HOH CH₂OH D-glucose CHO он———н H- он——н он——н CH₂OH L-glucose CH₂OH C=0 HO-C-H H - C_OH -OH H-C-OH CH₂OH D-Fructose
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