Carbohydrates Revision Quetsions

Question 1

Which of the following describes the relationship between the straight chain forms
of D-glucose and D-galactose?
a) They are L- and D-enantiomers
b) They are epimers
c) They are anomers
d) They are constitutional isomers

Answer 1

b) they are epimers

Question 2

Which of the following molecules is a furanose in its cyclical form?

a) Mannose
b) Sucrose
c) Lactose
d) Fructose

Answer 2

d) fructose

Question 3

The straight chain form of glucose differs from the straight chain form of fructose
in which of the following ways?
a) Saturation
b) Number of carbon atoms
c) They are anomers
d) Number of hydroxyl groups
e) Type of carbonyl functional group

Answer 3

e) type of carbonyl function group

Question 4

Which property is shared by Amylopectin and cellulose?

a) Both are composed of D-glucose units
b) Both are heteropolysaccharides
c) Both contain negatively charged groups
d) Both are branched structure

Answer 4

a) Both are composed of D-glucose units

Question 5

Which property differs between amylose and cellulose?

a) the monosaccharide components
b) the orientation of the glycosidic bonds
c) the degree of branching
d) the carbons linked by the glycosidic bonds

Answer 5

b) the orientation of the glycosidic bonds

Question 6

Which characteristic distinguishes amylopectin and glycogen?

a) Types of glycosidic bonds
b) The degree of branching
c) Only amylopectin can form hydrogen bonds
d) Only glycogen has a coiled shape

Answer 6

b) The degree of branching

Question 7

Which is true about glycoproteins

a) They are lipids linked to proteins and oligosaccharide chains
b) They are carbohydrates with proteins attached to them
c) They are exposed at the cell surface of cells
d) They are proteins covalently linked to oligosaccharides chains

Answer 7

d) They are proteins covalently linked to oligosaccharides chains