1- Refer to the monosaccharides below to answer each of the following question(s): CH₂OH CHO CH₂OH CH₂OH 0 H- OH 0 0 HO- H H- -OH HO H HO H H OH HO- H CH₂OH H. OH HO H HO- H CH₂OH CH₂OH CH3 a. Sorbose b. Rhamnose c. Erythrulose d. Xylulose Classify each sugar by type; for example, glucose is an aldohexose. a. Xylulose is .. b. Erythrulose is . c. Sorbose is .. d. Rhamnose is .. 2- Consider the reaction below to answer the following question(s). CHO H OH CH₂OH CH₂OH HO- H HO HO + H. -OH HO OH HO. H OH OH H -OH H OH CH₂OH Q Z a. Refer to Exhibit 25-11. Place a triangle around the anomeric carbon in compound Q. Compound Z is: b. 1. the D-anomer. 2. the a-anomer. 3. the ẞ-anomer. 4. the L-anomer. c. Which anomer is the LEAST stable? d. Q and Z are cyclic examples of: a. acetals b. hemiacetals c. alditols d. hemialditols

Introduction to General, Organic and Biochemistry
11th Edition
ISBN:9781285869759
Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Chapter20: Carbohydrates
Section: Chapter Questions
Problem 20.14P
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Question
1- Refer to the monosaccharides below to answer each of the following question(s):
CH₂OH
CHO
CH₂OH
CH₂OH
0
H-
OH
0
0
HO-
H
H-
-OH
HO
H
HO H
H OH
HO- H
CH₂OH
H.
OH
HO
H
HO-
H
CH₂OH
CH₂OH
CH3
a. Sorbose
b. Rhamnose
c. Erythrulose
d. Xylulose
Classify each sugar by type; for example, glucose is an aldohexose.
a. Xylulose is ..
b. Erythrulose is .
c. Sorbose is ..
d. Rhamnose is ..
2- Consider the reaction below to answer the following question(s).
CHO
H
OH
CH₂OH
CH₂OH
HO-
H
HO
HO
+
H.
-OH
HO
OH
HO.
H
OH
OH
H
-OH
H
OH
CH₂OH
Q
Z
a.
Refer to Exhibit 25-11. Place a triangle around the anomeric carbon in compound Q.
Compound Z is:
b.
1. the D-anomer.
2. the a-anomer.
3. the ẞ-anomer.
4. the L-anomer.
c. Which anomer is the LEAST stable?
d. Q and Z are cyclic examples of:
a. acetals
b.
hemiacetals
c. alditols
d.
hemialditols
Transcribed Image Text:1- Refer to the monosaccharides below to answer each of the following question(s): CH₂OH CHO CH₂OH CH₂OH 0 H- OH 0 0 HO- H H- -OH HO H HO H H OH HO- H CH₂OH H. OH HO H HO- H CH₂OH CH₂OH CH3 a. Sorbose b. Rhamnose c. Erythrulose d. Xylulose Classify each sugar by type; for example, glucose is an aldohexose. a. Xylulose is .. b. Erythrulose is . c. Sorbose is .. d. Rhamnose is .. 2- Consider the reaction below to answer the following question(s). CHO H OH CH₂OH CH₂OH HO- H HO HO + H. -OH HO OH HO. H OH OH H -OH H OH CH₂OH Q Z a. Refer to Exhibit 25-11. Place a triangle around the anomeric carbon in compound Q. Compound Z is: b. 1. the D-anomer. 2. the a-anomer. 3. the ẞ-anomer. 4. the L-anomer. c. Which anomer is the LEAST stable? d. Q and Z are cyclic examples of: a. acetals b. hemiacetals c. alditols d. hemialditols
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