21. The structure of D-arabinose is shown below. How many stereoisomers arepossible for this molecule (including the one shown)?H.010HO-C-HH-C-OHH-C-OHPlease I need the solution in 10 minutesCH2OHD-ArabinoseA) EightB) FourC) SixD) One

In carbohydrates, the carbon that is attached to four different groups is called a chiral centre.…

Answered: 21. The structure of D-arabinose is…

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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A student is attempting to add asparagine to a methionine that is connected to a solid polystyrene bead. They mix together the two components below with DCC, and some of the indicated product is generated. However, more happens in this mixture, resulting in multiple products. What reactivity is happening, and how can it be avoided (to give the indicated product in high yield)?
The sugar molecules shown below are a) Enantiomers b) Epimers c) Anomers d) Diastereomers
Which of the following is the correct statement for the a anomer and B anomer of D-arabinose? O They contain axial or equatorial carbonyl groups. They have different configurations around only one carbon atom They are two unstable ring structures that are mirror images. O They contain different numbers of hydroxyl groups.
Explain the structure and its components
7. Consider the structures shown. For each structure select all that apply. a) pentose, hexose or heptose b) D or L c) ketose or aldose d) a or ẞ e) pyranose or furanose COOM CHACH Structure A Structure C
Name the types of glycosidic bonds found in this olygomer, from left to right (from 1 to 3) CH 20H CH 2OH CH 2OH но OH OH OH OH OH OH O alpha1-1, alpha1-4, n O alpha1-4, alpha1-4, n O alpha1-4, beta1-2 O alpha1-4, beta1-4 O beta1-4, alpha 1-4 « Previous Next Not saved Submit Quiz
Describe this glycosidic bond.
Which of the following is an aldo-tetrose ? * НО H НО Н OH Н OH OH CH2OH (a) (d) H Н НО H A B D OE н -ОН -ОН CH₂OH c=0 н -OH CH₂OH (b) (e) н НО НО H- CH₂OH c=0 -H H OH CH₂OH (c) H Н CH₂OH Т c=0 OH OH CH2OH
What is the systematic name of the cyclic monosaccharide shown here? Be sure to include the structural form as a component of the name. H OH CH₂OH H OH H H OH B-D-glucopyranoside B-D-glucopyranose B-D-glucofuranose Previous Page B-D-glucofuranoside OH -I H Next Page Page 10 of 25
Modify the mannose structures provided to show the structure of a disaccharide formed from two mannose uni 1-6-ẞ-glycosidic linkage. CH₂OH CH₂OH H OH H OH H H OH OH OH OH OH H OH H H H H H
19. (a) Use Figure 1 to draw the cyclic ẞ-form of the monosaccharide shown below. CHO CH₂OH HO-CH HO-C-H H-C-OH H-C-OH CH₂OH H Z Figure 1 (b) Draw the enantiomer of the monosaccharide shown below. Is the enantiomer a D-sugar or an L-sugar? CHO HO–CH H-C-OH HO-C—H H-C-OH CH₂OH
Below is Gulose in the open chain form: CHO H C-OH H C-OH HO C-H H- OH CH2OH Which of the following shows B-D-Gulose? A) B) CH2OH CH2OH OH ОН OH OH H H. OH OH H OH C) D) E) CH2OH H OH OH OH OH H CH2OH ČH2OH H H H. H. OH H. H. OH OH ÓH ОН H. -T -T I-

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21. The structure of D-arabinose is shown below. How many stereoisomers are possible for this molecule (including the one shown)? H 010 HO-C-H I н-с-он H-C-OH I CH₂OH D-Arabinose A) Eight B) Four C) Six D) One