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Copyright © 2017 Pearson Education, Inc.
Answers to Chapter 20 Practice Test
1.
a.
C
OH
HO O
H
H
HO
OH
H
OH
H
COOH
c.
OH
H
H
HO
H
HO
OH
H
CH
2
OH
H
HO
H
HO
H
HO
OH
H
CH
2
OH
+
C
H O
C
H O
b.
O
OH
HO
OH
OCH
3
+
CH
2
OH
O
OH
HO
OH
CH
2
OH
OCH
3
d.
OH
H
OH
H
OH
H
CH
2
OH
C
HO O
2.
a.
Glycogen contains
a
-1,4 and
b
-1,6 -glycosidic linkages.
F
b.
d-Mannose is a C-1 epimer of d-glucose.
F
c.
d-Glucose and l-glucose are anomers.
F
d.
d-Erythrose and d-threose are diastereomers.
T
e.
Wohl degradations of d-glucose and d-gulose form the same aldopentose.
F
3.
H
HO
H
HO
OH
H
OH
H
CH
2
OH
OH
H
H
HO
OH
H
OH
H
CH
2
OH
C
H O
C
H O
4.
d-mannose and d-glucose
5.
C
H O
CH
2
CH
3
OH H
H OH
C
H O
CH
2
CH
3
H HO
H OH
CH
2
OH
CH
2
CH
3
O
H OH
6.
d-altrose
7.
Amylose has
a
-1,4 -glycosidic linkages, whereas cellulose has
b
-1,4 -glycosidic linkages.