Homework answers / question archive / University of Central Florida FIL 1000 CH 16 Quiz 1)Aldoses can form which type of cyclic structure? Select one: a

University of Central Florida FIL 1000 CH 16 Quiz 1)Aldoses can form which type of cyclic structure? Select one: a

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University of Central Florida

FIL 1000

CH 16 Quiz

1)Aldoses can form which type of cyclic structure? Select one:

a.            Hemiacetal

b.            Hemiketal

c.             Both hemiacetal and hemiketal

d.            Neither hemiacetal and hemiketal

 

2.            Common table sugar is Select one:

a.            glucose

b.            fructose c. sucrose

d. maltose

e. lactose

 

3.            Deoxyribose is best described as a: Select one:

a.            oxidized form of ribose

b.            reduced pyranose

c.             polyhydroxyl alcohol

d.            glycoside Incorrect

e.            reduced form of a pentose

 

 

4.            Epimers are Select one:

a.            stereoisomers that differ from each other in their configuration at two or more carbon atoms. b. stereoisomers that differ from each other in their configuration at a single carbon atom.

c. the α and β forms of cyclic sugars.

d. two related compounds, pyran and furan.

 

5.            For the α anomer of a D-sugar, the anomeric hydroxyl in a Haworth projection Select one:

a.            has an upward projection (on the same side as the terminal CH2OH group).

b.            has a downward projection (on the opposite side from the terminal CH2OH group).

c.             may be either up or down, it depends on the individual sugar.

d.            is non-existent; anomers are a consideration only in Fischer projections.

 

6.            Glycogen is Select one:

a.            polysaccharide storage polymer found in plants

b.            a linear polysaccharide

c.             a highly branched polysaccharide found in animals.

d.            a synthetic sugar substitute

 

7.            The α and β forms of the same sugar are called Select one:

a.            anomers.

b.            diastereoisomers.

c.             enantiomers.

d.            epimers.

e.            none of these

 

8.            The simplest aldotriose is:

Select one:

a.            acetone

b.            dihydroxyacetone c. glyceraldehyde

d. threose

 

9.            Which of the following disaccharides cannot be digested by mammals? Select one:

a.            cellobiose

b.            sucrose

c.             maltose

d.            lactose

 

10.          Which of the following monosaccharides is a ketose? Select one:

a.            arabinose

b.            ribose

c.             xylose

d.            lyxose

e.            none of them