Hint it may help to draw the ring forms of these pentoses, for the anomeric carbon put it in the beta conformation. CHO CHO CHO CHO H OH HO H H- -OH HO H H OH H -OH HO H HO H H OH H -OH H -OH H OH CH₂OH CH₂OH CH₂OH CH₂OH D-Ribose D-Arabinose D-Xyose D-Lyxose

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Question

You decide to play mad scientist and try to make an ‘RNA’ like molecule with a different Aldopentose. (remember ‘normal’ RNA uses ribose)  
a. Which one would give you the best chance of making an RNA like molecule. Why would 
the others most definitely fail? (see image attached)

b. Come up with a name for your new molecule

 

 

Hint it may help to draw the ring forms of these pentoses, for the anomeric carbon put it in the
beta conformation.
CHO
CHO
CHO
CHO
H OH
HO
H
H-
-OH
HO
H
H
OH
H
-OH
HO
H
HO
H
H
OH
H
-OH
H
-OH
H
OH
CH₂OH
CH₂OH
CH₂OH
CH₂OH
D-Ribose
D-Arabinose
D-Xyose
D-Lyxose
Transcribed Image Text:Hint it may help to draw the ring forms of these pentoses, for the anomeric carbon put it in the beta conformation. CHO CHO CHO CHO H OH HO H H- -OH HO H H OH H -OH HO H HO H H OH H -OH H -OH H OH CH₂OH CH₂OH CH₂OH CH₂OH D-Ribose D-Arabinose D-Xyose D-Lyxose
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