Question 1

Amylopectin is a straight-chain polysaccharide.

Accepted Answer

A) True 
 B)False

Question 2

The breakdown of glucose to chemical energy for the cells to do work is an example of

Accepted Answer

A) oxidation. 
B) respiration. 
C) reduction. 
D) anabolism. 
E) mutarotation. 
A) oxidation. 
B) respiration. 
C) reduction. 
D) anabolism. 
E) mutarotation.

Question 3

A reducing sugar gives a precipitate of silver metal with Benedict's reagent.

Accepted Answer

A) True 
 B)False

Question 4

In a disaccharide, two monosaccharides are joined by what kind of bond?

Accepted Answer

A) double 
B) anomeric 
C) alcohol 
D) glycosidic 
E) rotational 
A) double 
B) anomeric 
C) alcohol 
D) glycosidic 
E) rotational

Question 5

Identify each Fischer projection as the D- or L-isomer.
-

Accepted Answer

The answer of Identify each Fischer projection as the D-...

Question 6

Fructose does not undergo hydrolysis because it is a

Accepted Answer

A) aldose. 
B) hexose. 
C) reducing sugar. 
D) monosaccharide. 
E) disaccharide. 
A) aldose. 
B) hexose. 
C) reducing sugar. 
D) monosaccharide. 
E) disaccharide.

Question 7

Which Fischer projection is the mirror image of the structure given below?

Accepted Answer

A)  
  
B)  
  
C) 
  
D)  
  
E)  
  
A)  
  
B)  
  
C) 
  
D)  
  
E)

Question 8

Identify each Fischer projection as the D- or L-isomer.
-

Accepted Answer

The answer of Identify each Fischer projection as the D-...

Question 9

In the L- isomer of a Fischer projection of a monosaccharide, the -OH group furthest from the carbonyl is written

Accepted Answer

A) on the left of the top chiral carbon. 
B) on the right of the top chiral carbon. 
C) on the left of the middle chiral carbon. 
D) on the left of the bottom chiral carbon. 
E) on the right of the bottom chiral carbon. 
A) on the left of the top chiral carbon. 
B) on the right of the top chiral carbon. 
C) on the left of the middle chiral carbon. 
D) on the left of the bottom chiral carbon. 
E) on the right of the bottom chiral carbon.

Question 10

Sucrose is made up of glucose units only.

Accepted Answer

A) True 
 B)False

Question 11

Glucose is stored in animals as glycogen.

Accepted Answer

A) True 
 B)False

Question 12

Humans cannot digest cellulose because they

Accepted Answer

A) lack the necessary enzymes to digest β-glycosides. 
B) are allergic to β-glycosides. 
C) are poisoned by β-glycosides. 
D) have intestinal flora which use up β-glycosides. 
E) cannot digest chlorophyll. 
A) lack the necessary enzymes to digest β-glycosides. 
B) are allergic to β-glycosides. 
C) are poisoned by β-glycosides. 
D) have intestinal flora which use up β-glycosides. 
E) cannot digest chlorophyll.

Question 13

The product of reduction of xylose is xylitol.

Accepted Answer

A) True 
 B)False

Question 14

Hyperglycemia is a condition in which

Accepted Answer

A) the glucose level in the blood is about 100 mg/dL. 
B) the amount of glucose in the urine is lower than normal. 
C)  the glucose level in the blood is higher than normal. 
D)  the glucose level in the pancreas is lower than normal. 
E) the glucose level in the liver is lower than normal. 
A) the glucose level in the blood is about 100 mg/dL. 
B) the amount of glucose in the urine is lower than normal. 
C)  the glucose level in the blood is higher than normal. 
D)  the glucose level in the pancreas is lower than normal. 
E) the glucose level in the liver is lower than normal.

Question 15

Which sugar is NOT a reducing sugar?

Accepted Answer

A) glucose 
B) fructose 
C) galactose 
D) maltose 
E) sucrose 
A) glucose 
B) fructose 
C) galactose 
D) maltose 
E) sucrose

Question 16

The oxidation of monosaccharides produces

Accepted Answer

A) sugar alcohols. 
B) disaccharides. 
C) trisaccharides. 
D) sugar acids. 
E) polysaccharides. 
A) sugar alcohols. 
B) disaccharides. 
C) trisaccharides. 
D) sugar acids. 
E) polysaccharides.

Question 17

The conversion between α and β anomers is called

Accepted Answer

A) oxidation. 
B) reduction. 
C) glycoside. 
D) mutarotation. 
E) hydrolysis. 
A) oxidation. 
B) reduction. 
C) glycoside. 
D) mutarotation. 
E) hydrolysis.

Question 18

Galactose has the structure shown below. It can be classified as a(n)

Accepted Answer

A) ribose. 
B) ketose. 
C) disaccharide. 
D) monosaccharide. 
E) ketone. 
A) ribose. 
B) ketose. 
C) disaccharide. 
D) monosaccharide. 
E) ketone.

Question 19

State whether each of these structures is the α- or β-form.
-

Accepted Answer

The answer of State whether each of these structures is...

Question 20

Galactosemia is the name of a metabolic disorder. In this disorder, an enzyme is missing that is needed to

Accepted Answer

A) make galactose from lactose. 
B) make lactose from galactose. 
C) convert galactose to glycogen. 
D) convert galactose to glucose. 
E) convert α-galactose to β-galactose. 
A) make galactose from lactose. 
B) make lactose from galactose. 
C) convert galactose to glycogen. 
D) convert galactose to glucose. 
E) convert α-galactose to β-galactose.

Exam 15: Carbohydrates

Amylopectin is a straight-chain polysaccharide.

The breakdown of glucose to chemical energy for the cells to do work is an example of

A reducing sugar gives a precipitate of silver metal with Benedict's reagent.

In a disaccharide, two monosaccharides are joined by what kind of bond?

Identify each Fischer projection as the D- or L-isomer. -

Fructose does not undergo hydrolysis because it is a

Which Fischer projection is the mirror image of the structure given below?

Identify each Fischer projection as the D- or L-isomer. -

In the L- isomer of a Fischer projection of a monosaccharide, the -OH group furthest from the carbonyl is written

Sucrose is made up of glucose units only.

Glucose is stored in animals as glycogen.

Humans cannot digest cellulose because they

The product of reduction of xylose is xylitol.

Hyperglycemia is a condition in which

Which sugar is NOT a reducing sugar?

The oxidation of monosaccharides produces

The conversion between α and β anomers is called

Galactose has the structure shown below. It can be classified as a(n)

State whether each of these structures is the α- or β-form. -

Galactosemia is the name of a metabolic disorder. In this disorder, an enzyme is missing that is needed to

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