Question 1

The following sugar is also called fruit sugar:

Accepted Answer

A)   Fructose
B)   Glucose
C)   Lactose
D)   Sucrose
E)   MaltoseF) A) and C)
G) C) and E)

Question 2

Which of the following statements concerning plant cell walls is false?

Accepted Answer

A)   They are composed of a polysaccharide and protein matrix.
B)   They contain a lipid bilayer.
C)   They are porous to small molecules.
D)   They contain large amounts of protein.E) A) and B)
F) B) and D)

Question 3

Glycoproteins

Accepted Answer

A)   are involved in the metabolism of sugars
B)   are proteins to which sugars are covalently bonded
C)   occur in the bloodstream of diabetics
D)   have not been found in nature, but have been synthesized in the laboratoryE) A) and D)
F) A) and C)

Question 4

One major difference between bacterial and plant cell walls is that bacterial cell walls have polysaccharides that are crosslinked by peptides.

Accepted Answer

A) True 
 B)False

Question 5

Glycosidic linkages between monosaccharide units may vary based on

Accepted Answer

A)   the anomeric form of the cyclic structure, i.e., α or β.
B)   which −OH group is involved.
C)   both of these
D)   none of theseE) None of the above
F) A) and C)

Question 6

There are two forms of starch:

Accepted Answer

A)   amylose and glycogen, both of which are highly branched polysaccharides
B)   glycogen and chitin, both of which are linear polysaccharides
C)   amylopectin and glycogen, both of which are linear polysaccharides
D)   amylose, which is a linear polysaccharide, and amylopectin, which is highly branchedE) A) and D)
F) A) and C)

Question 7

The blue color in a well-known test for the presence of starches is due to

Accepted Answer

A)   the formation of crosslinks between molecules of starch, caused by the addition of Cu2+
B)   the reaction of the silver-ammonia complex ion with the hydroxyl groups of the starch
C)   the formation of a complex between iodine and amylose
D)   none of theseE) B) and C)
F) A) and D)

Question 8

Which of the following is true about Sucralose

Accepted Answer

A)   it is an artificial sweetener
B)   It is exactly like sucrose except for the presence of 3 chlorine atoms
C)   It is a dissacharide made up of glucose and fructose
D)   all of theseE) A) and C)
F) None of the above

Question 9

Exhibit 16C?A polysaccharide.
 
-Refer to Exhibit 16C. Which best describes the polysaccharide?

Accepted Answer

A)   homopolysaccharide
B)   heteropolysaccharide
C)   aminopolysaccharide
D)   cryptopolysaccharideE) B) and D)
F) B) and C)

Question 10

Exhibit 16C?A polysaccharide.
 
-Refer to Exhibit 16C. Which lettered subunit is the nonreducing end?

Accepted Answer

A)   A
B)   B
C)   C
D)   There is more than one nonreducing end on this carbohydrate.
E)   There are no nonreducing ends on this carbohydrate.F) B) and C)
G) A) and E)

Question 11

Cartilage and mucous are both slippery because:

Accepted Answer

A)   Short polymers comprise these compounds.
B)   The charge repulsion between the many acid groups in these polymers.
C)   The sticky nature of sugars.
D)   Both charge repulsion of acidic groups and the sticky nature of sugars.
E)   All of theseF) C) and D)
G) B) and E)

Question 12

The simplest aldotriose is:

Accepted Answer

A)   acetone
B)   dihydroxyacetone
C)   glyceraldehyde
D)   threoseE) None of the above
F) All of the above

Question 13

Sucrose is composed of the following simple sugars:

Accepted Answer

A)   galactose only
B)   glucose only
C)   fructose only
D)   galactose and glucose
E)   glucose and fructoseF)  galactose and fructoseG) A) and D)
H) A) and C)

Question 14

How many enantiomeric pairs are possible for a aldohexose?

Accepted Answer

A)   2
B)   4
C)   8
D)   16E) B) and C)
F) A) and D)

Question 15

The difference between cellobiose and maltose is:

Accepted Answer

A)   one contains glucose and the other fructose
B)   they contain different monosaccharides
C)   they both contain glucose units but are connected together at different carbons
D)   one has an á linkage and the other a â linkage
E)   there is no difference between the twoF) A) and B)
G) A) and C)

Question 16

Glycogen has a similar structure to amylopectin, but is less highly branched.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is not a function of carbohydrates?

Accepted Answer

A)   They are major energy sources.
B)   They play key roles in processes that take place on the surface of cells.
C)   They are used in structural roles.
D)   They are catalytic components of enzymes.E) All of the above
F) B) and C)

Question 18

A furanose is a sugar that

Accepted Answer

A)   contains a five-membered ring as part of its cyclic structure.
B)   contains a six-membered ring as part of its cyclic structure.
C)   is a five-carbon open-chain sugar.
D)   is a six-carbon open-chain sugar.E) A) and C)
F) A) and B)

Question 19

Exhibit 16C?A polysaccharide.
 
-Refer to Exhibit 16C. Which lettered subunit is the reducing end?

Accepted Answer

A)   A
B)   B
C)   C
D)   There is more than one nonreducing end on this carbohydrate.
E)   There are no nonreducing ends on this carbohydrate.F) B) and E)
G) D) and E)

Question 20

A bacterial cell wall is composed of:

Accepted Answer

A)   A polysaccharide consisting of a single type of monosaccharide unit and cross-linking oligopeptides.
B)   A polysaccharide consisting of 2 types of monosaccharide units and cross-linking oligopeptides.
C)   A polysaccharide consisting of 3 types of monosaccharide units and cross-linking oligopeptides.
D)   Two different polysaccharides and 1 type of oligopeptide, which are cross-linked.E) B) and D)
F) A) and B)

Exam 16: Carbohydrates

Sucrose is composed of the following simple sugars:

Correct AnswerverifiedShow Answer

Exhibit 16C?A polysaccharide. -Refer to Exhibit 16C. Which lettered subunit is the reducing end?

Correct AnswerverifiedShow Answer

The difference between cellobiose and maltose is:

Correct AnswerverifiedShow Answer

Cartilage and mucous are both slippery because:

Correct AnswerverifiedShow Answer

Exhibit 16C?A polysaccharide. -Refer to Exhibit 16C. Which lettered subunit is the nonreducing end?

Correct AnswerverifiedShow Answer

How many enantiomeric pairs are possible for a aldohexose?

Correct AnswerverifiedShow Answer

One major difference between bacterial and plant cell walls is that bacterial cell walls have polysaccharides that are crosslinked by peptides.

Correct AnswerverifiedShow Answer

Which of the following is true about Sucralose

Correct AnswerverifiedShow Answer

Glycoproteins

Correct AnswerverifiedShow Answer

The blue color in a well-known test for the presence of starches is due to

Correct AnswerverifiedShow Answer

Glycosidic linkages between monosaccharide units may vary based on

Correct AnswerverifiedShow Answer

The following sugar is also called fruit sugar:

Correct AnswerverifiedShow Answer

Which of the following statements concerning plant cell walls is false?

Correct AnswerverifiedShow Answer

Glycogen has a similar structure to amylopectin, but is less highly branched.

Correct AnswerverifiedShow Answer

A bacterial cell wall is composed of:

Correct AnswerverifiedShow Answer

The simplest aldotriose is:

Correct AnswerverifiedShow Answer

A furanose is a sugar that

Correct AnswerverifiedShow Answer

Which of the following is not a function of carbohydrates?

Correct AnswerverifiedShow Answer

There are two forms of starch:

Correct AnswerverifiedShow Answer

Exhibit 16C?A polysaccharide. -Refer to Exhibit 16C. Which best describes the polysaccharide?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified