Chem 210 Module 4 Exam (2023/2024) Newest
Questions and Answers (Verified Answers)
1. Which of the following monosaccharides is a ketose?
Dihydroxyacetone
Galactose
Glucose
Glyceraldehyde
Idose: dihydroxyacetone
2. When two carbohydrates are epimers:
One is a pyranose, the other a furanose
One is an aldose, the other a ketose
They differ in length by one carbon
They differ only in the configuration about one carbon atom
They react differently with iodine: They differ only in the confirmation
about one carbon atom
3. : D.) alpha-D-glucose and beta-D-glucose
4. Lactose is made from linking galactose and glucose. When this happens
.
Gas is eliminated
An anomeric carbon is formed on carbon-
1 Water is released
An epimer is formed
An aldose is formed: water is released
5. Amylose and amylopectin are both polymers of:
A) ±D- -glucose
B) ²-D-glucose
C) Galactose
1/5
, D) Idose
E) Maltose: A.) alpha-D-glucose
6. Which statement about starch and glycogen is false?
A) Both have ²-D-glucose monomers
B) Both starch and glycogen are energy storage polysaccharides
C) Both are homopolymers of glucose
D) Glycogen is more extensively branched than starch
2/5
Questions and Answers (Verified Answers)
1. Which of the following monosaccharides is a ketose?
Dihydroxyacetone
Galactose
Glucose
Glyceraldehyde
Idose: dihydroxyacetone
2. When two carbohydrates are epimers:
One is a pyranose, the other a furanose
One is an aldose, the other a ketose
They differ in length by one carbon
They differ only in the configuration about one carbon atom
They react differently with iodine: They differ only in the confirmation
about one carbon atom
3. : D.) alpha-D-glucose and beta-D-glucose
4. Lactose is made from linking galactose and glucose. When this happens
.
Gas is eliminated
An anomeric carbon is formed on carbon-
1 Water is released
An epimer is formed
An aldose is formed: water is released
5. Amylose and amylopectin are both polymers of:
A) ±D- -glucose
B) ²-D-glucose
C) Galactose
1/5
, D) Idose
E) Maltose: A.) alpha-D-glucose
6. Which statement about starch and glycogen is false?
A) Both have ²-D-glucose monomers
B) Both starch and glycogen are energy storage polysaccharides
C) Both are homopolymers of glucose
D) Glycogen is more extensively branched than starch
2/5
