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Biochem Portage Learning CHEM 210 Biochem Module 4 Exam (1).
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Biochem Portage Learning CHEM 210 Biochem Module 4 Exam (1).
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Biochem Module 4 Examwhich of the following monosaccharides is not an aldose?
a. erythrose
b. dihydroxyacetone
c. glucose
d. glyceraldehyde
e. ribose - CORRECT ANSWER-b. dihydroxyacetone
when two monosaccharides are epimers:
a. they differ only in the configuration about the penultimate carbon
b. one is an aldose, the other a ketose
c. they differ only in the configuration about one carbon atom
d. they form o-glycosidic bonds
e. they are oligosaccharides - CORRECT ANSWER-c. they differ only in the
configuration about one carbon atom
which pair is anomeric?
a. D-glucose and D-fructose
b. D-glucose and L-fructose
c. D-glucose and L-glucose
d. alpha-D-glucose and beta-D-fructose
e. alpha-D-glucose and beta-D-glucose - CORRECT ANSWER-e. alpha-D-glucose
and beta-D-glucose
lactose is made from linking galactose and glucose. when this happens:
a. a polysaccharide is formed
b. gas is eliminated
c. an epimer is formed
d. an anomeric carbon is formed on carbon-1
e. lactose forms by a condensation reaction - CORRECT ANSWER-e. lactose forms
by a condensation reaction
lactose is made from linking galactose and glucose. when this happens:
a. gas is eliminated
b. an anomeric carbon is formed on carbon-1
c. water is released
d. an epimer is formed
e. an aldose is formed - CORRECT ANSWER-c. water is released
, chitin and cellulose are both polymers of:
a. alpha-D-glucose
b. galactose
c. beta-D-glucose
d. idose
e. maltose - CORRECT ANSWER-c. beta-D-glucose
*starch, glycogen, amylose, and amylopectin = alpha-D-glucose
amylose and amylopectin are both polymers of:
a. alpha-D-glucose
b. beta-D-glucose
c. galactose
d. idose
e. maltose - CORRECT ANSWER-a. alpha-D-glucose
*cellulose and chitin = beta-D-glucose
*starch, glycogen, amylose, and amylopectin = alpha-D-glucose
which statement about starch and glycogen is false?
a. amylose is unbranched; amylopectin and glycogen contain many branches
b. both are heteropolymers of glucose
c. both have many -OH groups in their structures
d. both starch and glycogen are energy storage polysaccharides
e. glycogen is more extensively branched than starch - CORRECT ANSWER-b. both
are heteropolymers of glucose
which statement about starch and glycogen is false?
a. both have beta-D-glucose monomers
b. both starch and glycogen are energy storage polysaccharides
c. both are homopolymers of glucose
d. glycogen is more extensively branched that starch
e. both have O-glycosidic linkages - CORRECT ANSWER-a. both have
beta-D-glucose monomers
*starch and glycogen have alpha-D-glucose monomers
which monosaccharide is not a 6-carbon monosaccharide?
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