Question 1

Draw the structure(s)of the $\gamma$-lactone(s)that can be formed from d-Glucaric acid.

Accepted Answer

The answer of Draw the structure(s)of the $\gamma$-lactone(s)that can be...

Question 2

Sugars that would yield the same phenylosazone are:

Accepted Answer

A) I and II 
B) II and III 
C) I,II,and III 
D) III and IV 
E) I,II,and V 
A) I and II 
B) II and III 
C) I,II,and III 
D) III and IV 
E) I,II,and V

Question 3

Which of these is α-d-glucopyranose?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 4

Which reagent would be used for the following transformation?

Accepted Answer

A) NaBH4 
B) AgNO3/C2H5OH 
C) Br2/CCl4 
D) HCl 
E) Hot KMnO4 
A) NaBH4 
B) AgNO3/C2H5OH 
C) Br2/CCl4 
D) HCl 
E) Hot KMnO4

Question 5

Consider the structures below.Which of the structures II-VI are epimers of I?

Accepted Answer

A) II 
B) III and IV 
C) IV 
D) V 
E) VI 
A) II 
B) III and IV 
C) IV 
D) V 
E) VI

Question 6

Refer to the following structures.Which aldohexose when subjected to Fischer's end-group interchange would be converted to a compound identical with itself?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 7

Carbohydrates that hydrolyze to give a large number of molecules of monosaccharides are called ___.

Accepted Answer

The answer of Carbohydrates that hydrolyze to give a large...

Question 8

Which of these is a glycoside?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 9

If human were able to completely hydrolyze paper,wood or cotton in their digestive system,could humans get fat? Why?

Accepted Answer

Yes,because these ma

Question 10

Consider the structures shown below.Which compound is not a reducing sugar?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 11

Compound X is a reducing sugar which,on hydrolysis,affords two molar equivalents of d-glucose.This hydrolysis is catalyzed by an enzyme specific for glucosides of this type:   What is the identity of X?

Accepted Answer

A) Sucrose 
B) Lactose 
C) Maltose 
D) Cellobiose 
E) None of these choices. 
A) Sucrose 
B) Lactose 
C) Maltose 
D) Cellobiose 
E) None of these choices.

Question 12

Which is a ketohexose?

Accepted Answer

A) d-Glucose 
B) d-Fructose 
C) d-Mannose 
D) d-Ribose 
E) (+)-Sucrose 
A) d-Glucose 
B) d-Fructose 
C) d-Mannose 
D) d-Ribose 
E) (+)-Sucrose

Question 13

Which of these is a non-reducing monosaccharide?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 14

Which of the following structures represent enantiomers?

Accepted Answer

A) I and II 
B) II and III 
C) III and IV 
D) III and V 
E) IV and V 
A) I and II 
B) II and III 
C) III and IV 
D) III and V 
E) IV and V

Question 15

Which compound or compounds would be formed when d-glucose is dissolved in methanol and then treated with anhydrous acid?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) I and IV 
A) I 
B) II 
C) III 
D) IV 
E) I and IV

Question 16

What is the structural feature that makes amylose exhibit a helical structure and cellulose exhibit a rigid linear structure?

Accepted Answer

The @#LAT-DLM&(1@#LAT-DLM&4)glycosidic b

Question 17

Which compound is d-galactose?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 18

Sugars that undergo mutarotation in neutral aqueous solution are:

Accepted Answer

A) I and III 
B) III and IV 
C) II,III,and IV 
D) I,II,and V 
E) I and IV 
A) I and III 
B) III and IV 
C) II,III,and IV 
D) I,II,and V 
E) I and IV

Question 19

Which disaccharide(s)(sucrose,maltose,cellobiose,and lactose)
a)are α-glucosides?
b)is a β-galactoside?
c)reduce Fehling's solution?
d)gives invert sugar?
e)form osazones and exhibit mutarotation?

Accepted Answer

a)Sucrose and maltos

Question 20

What is the ratio of products formed by the reaction of periodic acid with the following compound?   H2C=O HCO2H CO2 I 5 1 0
II 3 3 0
III 1 5 0
IV 1 4 1
V 0 4 2

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Exam 22: Carbohydrates

Draw the structure(s)of the γ\gammaγ -lactone(s)that can be formed from d-Glucaric acid.

Sugars that would yield the same phenylosazone are:

Which of these is α-d-glucopyranose?

Which reagent would be used for the following transformation?

Consider the structures below.Which of the structures II-VI are epimers of I?

Refer to the following structures.Which aldohexose when subjected to Fischer's end-group interchange would be converted to a compound identical with itself?

Carbohydrates that hydrolyze to give a large number of molecules of monosaccharides are called ___.

Which of these is a glycoside?

If human were able to completely hydrolyze paper,wood or cotton in their digestive system,could humans get fat? Why?

Consider the structures shown below.Which compound is not a reducing sugar?

Compound X is a reducing sugar which,on hydrolysis,affords two molar equivalents of d-glucose.This hydrolysis is catalyzed by an enzyme specific for glucosides of this type: What is the identity of X?

Which is a ketohexose?

Which of these is a non-reducing monosaccharide?

Which of the following structures represent enantiomers?

Which compound or compounds would be formed when d-glucose is dissolved in methanol and then treated with anhydrous acid?

What is the structural feature that makes amylose exhibit a helical structure and cellulose exhibit a rigid linear structure?

Which compound is d-galactose?

Sugars that undergo mutarotation in neutral aqueous solution are:

Which disaccharide(s)(sucrose,maltose,cellobiose,and lactose) a)are α-glucosides? b)is a β-galactoside? c)reduce Fehling's solution? d)gives invert sugar? e)form osazones and exhibit mutarotation?

What is the ratio of products formed by the reaction of periodic acid with the following compound? H2C=O HCO2H CO2 I 5 1 0 II 3 3 0 III 1 5 0 IV 1 4 1 V 0 4 2

The Basics

Families of Carbon

Acids and Bases

Nomenclature and Conformations of Alkanes and Cycloalkanes

Stereochemistry

Nucleophilic Reactions

Alkenes and Alkynes I

Alkenes and Alkynes II

Nuclear Magnetic Resonance and Mass Spectrometry

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Reactions at the Α Carbon of Carbonyl Compounds

Condensation and Conjugate Addition Reactions of Carbonyl Compounds

Amines

Transition Metal Complexes

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Draw the structure(s)of the $\gamma$ -lactone(s)that can be formed from d-Glucaric acid. $Draw the structure(s)of the \gamma -lactone(s)that can be formed from d-Glucaric acid.$

What is the ratio of products formed by the reaction of periodic acid with the following compound? H₂C=O HCO₂H CO₂ I 5 1 0 II 3 3 0 III 1 5 0 IV 1 4 1 V 0 4 2