Exam 25: Carbohydrates

From the sugars below, choose the one that best fits each description below. Place the letter of the sugar in the blank to the left of the description. There is only one correct answer for each question. -_____ is a deoxy sugar.

(Multiple Choice)

4.8/5

(65)

Question 21

What is the relationship between D-threose and L-threose?

(Multiple Choice)

4.8/5

(80)

Question 22

What are the two major organic products obtained from the following reaction? What is the relationship between them? (What type of isomers are they?)

(Essay)

4.7/5

(74)

Question 23

A 1,4- $\alpha$ -linkage between two glucose units produces a disaccharide called maltose.

(True/False)

4.8/5

(74)

Question 24

What is the major organic product obtained from the following reaction?

(Multiple Choice)

4.9/5

(78)

Question 25

What are the R/S stereochemical designations of C2 and C3 of D-erythrose?

(Multiple Choice)

4.9/5

(74)

Question 26

What is the major organic product obtained from the reaction of glucose with glucose oxidase?

(Essay)

5.0/5

(66)

Question 27

Consider the following structures. Answer the following questions by placing the appropriate number or indicated letter in the blank. -The formula for maltose is: The number of the acetal carbon is _____.

(Short Answer)

4.9/5

(88)

Question 28

Which of the following structures represent the same carbohydrate?

(Multiple Choice)

4.8/5

(76)

Question 29

Complete the structure on the right so that it represents the pyranose form of the carbohydrate shown on the left as a Fischer projection. Place the substituents carefully so that their position in axial or equatorial positions accurately reflects the stereochemistry of the carbohydrate.

(Essay)

4.9/5

(75)

Question 30

From the sugars below, choose the one that best fits each description below. Place the letter of the sugar in the blank to the left of the description. There is only one correct answer for each question. -The name of the following Fischer projection including stereochemistry is _____________________.

(Short Answer)

4.9/5

(76)

Question 31

Which of the following structures represent the same carbohydrate?

(Multiple Choice)

4.9/5

(58)

Question 32

From the sugars below, choose the one that best fits each description below. Place the letter of the sugar in the blank to the left of the description. There is only one correct answer for each question. -_____ is a sugar with three chirality centers.

(Multiple Choice)

4.7/5

(82)

Question 33

The following are two different methods of representing the same structure.

(True/False)

4.9/5

(79)

Question 34

Complete the structure on the right so that it represents the pyranose form of the carbohydrate shown on the left as a Fischer projection. Place the substituents carefully so that their position in axial or equatorial positions accurately reflects the stereochemistry of the carbohydrate.

(Essay)

4.8/5

(87)

Question 35

Consider the following structures. Answer the following questions by placing the appropriate number or indicated letter in the blank. -The structures that represent reducing sugars are: a. only the ketoses. b. only the aldoses. c. all of these structures.

(Short Answer)

4.9/5

(72)

Question 36

What is the major organic product obtained from the following reaction?

(Multiple Choice)

4.8/5

(76)

Question 37

Which of the following represent a ketose?

(Multiple Choice)

4.9/5

(83)

Question 38

A glycoside is formed upon reaction of glucopyranose with NaBH₄.

(True/False)

4.8/5

(77)

Question 39

What is the relationship between D-erythrose and D-threose?

(Multiple Choice)

4.9/5

(77)

Question 40

Showing 21 - 40 of 60

Exam 25: Carbohydrates

From the sugars below, choose the one that best fits each description below. Place the letter of the sugar in the blank to the left of the description. There is only one correct answer for each question. -_____ is a deoxy sugar.

What is the relationship between D-threose and L-threose?

What are the two major organic products obtained from the following reaction? What is the relationship between them? (What type of isomers are they?)

A 1,4- α\alphaα -linkage between two glucose units produces a disaccharide called maltose.

What is the major organic product obtained from the following reaction?

What are the R/S stereochemical designations of C2 and C3 of D-erythrose?

What is the major organic product obtained from the reaction of glucose with glucose oxidase?

Consider the following structures. Answer the following questions by placing the appropriate number or indicated letter in the blank. -The formula for maltose is: The number of the acetal carbon is _____.

Which of the following structures represent the same carbohydrate?

Complete the structure on the right so that it represents the pyranose form of the carbohydrate shown on the left as a Fischer projection. Place the substituents carefully so that their position in axial or equatorial positions accurately reflects the stereochemistry of the carbohydrate.

Which of the following structures represent the same carbohydrate?

From the sugars below, choose the one that best fits each description below. Place the letter of the sugar in the blank to the left of the description. There is only one correct answer for each question. -_____ is a sugar with three chirality centers.

The following are two different methods of representing the same structure.

Complete the structure on the right so that it represents the pyranose form of the carbohydrate shown on the left as a Fischer projection. Place the substituents carefully so that their position in axial or equatorial positions accurately reflects the stereochemistry of the carbohydrate.

Consider the following structures. Answer the following questions by placing the appropriate number or indicated letter in the blank. -The structures that represent reducing sugars are: a. only the ketoses. b. only the aldoses. c. all of these structures.

What is the major organic product obtained from the following reaction?

Which of the following represent a ketose?

A glycoside is formed upon reaction of glucopyranose with NaBH4.

What is the relationship between D-erythrose and D-threose?

Covalent Bonding and Shapes of Molecules

Alkanes and Cycloalkanes

Stereoisomerism and Chirality

Acids and Bases

Alkenes: Bonding, Nomenclature, and Properties

Reactions of Alkenes

Alkynes

Haloalkanes, Halogenation, and Radical Reactions

Nucleophilic Substitution and Beta-Elimination

Alcohols

Ethers, Epoxides, and Sulfides

Infrared Spectroscopy

Nuclear Magnetic Resonance Spectroscopy

Mass Spectrometry

An Introduction to Organometallic Compounds

Aldehydes and Ketones

Carboxylic Acids

Functional Derivatives of Carboxylic Acids

Enolate Anions and Enamines

Dienes, Conjugated Systems, and Pericyclic Reactions

Benzene and the Concept of Aromaticity

Reactions of Benzene and Its Derivatives

Amines

Catalytic Carbon-Carbon Bond Formation

Lipids

Amino Acids and Proteins

Nucleic Acids

Organic Polymer Chemistry

Filters

A 1,4- $\alpha$ -linkage between two glucose units produces a disaccharide called maltose.

A glycoside is formed upon reaction of glucopyranose with NaBH₄.