Question 1

The source of nitrogen for the synthesis of glucosamine-6-phosphate from fructose-6-phosphate is the amino acid ___________.

Accepted Answer

A) aspartate 
B) asparagine 
C) glutamate 
D) glutamine 
E) lysine 
A) aspartate 
B) asparagine 
C) glutamate 
D) glutamine 
E) lysine D

Question 2

Which of the following is a ketose?

Accepted Answer

A)    
B)    
C)    
D)    
E) None of the above 
A)    
B)    
C)    
D)    
E) None of the above B

Question 3

The role of collagen in vertebrate bones as a matrix for mineral deposition is most analogous to the role of _________ in ___________.

Accepted Answer

A) cellulose;plant cell walls 
B) chitin;invertebrate exoskeletons 
C) xylan;plant cell walls 
D) keratan sulfate: mammalian skin 
E) amylose: plant cell walls 
A) cellulose;plant cell walls 
B) chitin;invertebrate exoskeletons 
C) xylan;plant cell walls 
D) keratan sulfate: mammalian skin 
E) amylose: plant cell walls B

Question 4

An N-linked glycan would be attached to ______ while an O-linked glycan would be attached to ________.

Accepted Answer

A) Asn;Ser 
B) Lys;Tyr 
C) Gln;Thr 
D) Arg;Ser 
E) Lys;Ser 
A) Asn;Ser 
B) Lys;Tyr 
C) Gln;Thr 
D) Arg;Ser 
E) Lys;Ser

Question 5

Which of the following polysaccharides contains exclusively glucose in $\beta$(1$\to$4)glycosidic bonds?

Accepted Answer

A) amylose 
B) amylopectin 
C) glycogen 
D) cellulose 
E) chitin 
A) amylose 
B) amylopectin 
C) glycogen 
D) cellulose 
E) chitin

Question 6

Which of the following formulas would be a carbohydrate

Accepted Answer

A) C5H12O5 
B) C4H8O6 
C) C6H10O6 
D) C3H8O3 
E) C6H12O6 
A) C5H12O5 
B) C4H8O6 
C) C6H10O6 
D) C3H8O3 
E) C6H12O6

Question 7

Which of the following is a diastereomer of D-mannose?

Accepted Answer

A) D-gulose 
B) D-altrose 
C) D-idose 
D) D-talose 
E) all of the above 
A) D-gulose 
B) D-altrose 
C) D-idose 
D) D-talose 
E) all of the above

Question 8

Draw a $\beta$-disaccharide composed of glucose linked to its C-2 epimer by an $\alpha$(1$\to$4)glycosidic bond with the anomeric carbon of glucose contributing to the glycosidic bond.

Accepted Answer

The answer of Draw a $\beta$-disaccharide composed of glucose linked...

Question 9

Oseltamivir,also known as Tamiflu,is effective as an antiviral against the influenza virus due to its ability to block the action of which protein associated with the surface of the viral particle?

Accepted Answer

A) hemagglutinin 
B) neuraminidase 
C) M1 
D) M2 
E) none of the above 
A) hemagglutinin 
B) neuraminidase 
C) M1 
D) M2 
E) none of the above

Question 10

Which of the following explains the importance of sucrose as a disaccharide?

Accepted Answer

A) the glycosidic bond is much more stable than a typical glycosidic bond 
B) the presence of two glucose residues provides a readily available glucose source 
C) $\beta$-glycosidic bonds are much more stable than $\alpha$-glycosidic bonds 
D) since both anomeric carbons are involved in the glycosidic bond,oxidation is limited 
E) none of the above 
A) the glycosidic bond is much more stable than a typical glycosidic bond 
B) the presence of two glucose residues provides a readily available glucose source 
C) $\beta$-glycosidic bonds are much more stable than $\alpha$-glycosidic bonds 
D) since both anomeric carbons are involved in the glycosidic bond,oxidation is limited 
E) none of the above

Question 11

Show the interaction that would take place between the R-group of asparagine in a protein and the substituent on C-2 of an N-acetylglucosamine residue of a glycan.

Accepted Answer

@#IMG-DLM& Shown are

Question 12

Of the following phosphate esters of monosaccharides,which has the most spontaneous $\Delta$GS1U1P1$\circ$S1S1P0´ of hydrolysis?

Accepted Answer

A) $\alpha$-D-glucose-6-phosphate 
B) $\beta$-D-glucose-6-phosphate 
C) $\beta$-D-glucose-1-phosphate 
D) $\alpha$-D-fructose-6-phosphate 
E) D-glyceraldehyde-3-phosphate 
A) $\alpha$-D-glucose-6-phosphate 
B) $\beta$-D-glucose-6-phosphate 
C) $\beta$-D-glucose-1-phosphate 
D) $\alpha$-D-fructose-6-phosphate 
E) D-glyceraldehyde-3-phosphate

Question 13

Which of the following designations best characterizes the following disaccharide?

Accepted Answer

A) Glc$\alpha$(1$\to$4)Gal 
B) Glc$\beta$(1$\to$4)Gal 
C) Gal$\alpha$(1$\to$4)Gal 
D) Gal$\beta$(1$\to$4)Gal 
E) none of the above 
A) Glc$\alpha$(1$\to$4)Gal 
B) Glc$\beta$(1$\to$4)Gal 
C) Gal$\alpha$(1$\to$4)Gal 
D) Gal$\beta$(1$\to$4)Gal 
E) none of the above

Question 14

Which of the following would be an anomer of $\alpha$-D-galactopyranose?

Accepted Answer

A)    
B)    
C)    
D)    
E) None of the above 
A)    
B)    
C)    
D)    
E) None of the above

Question 15

Using the structure of D-altrose,shown below,show a Haworth projection for the $\beta$ anomer.

Accepted Answer

The answer of Using the structure of D-altrose,shown below,show a...

Question 16

All glycosaminoglycans contain which of the following?

Accepted Answer

A) a sulfate ester 
B) a $\beta$(1$\to$4)glycosidic bond 
C) a carboxylate 
D) an amine group that is either acetylated or sulfated 
E) all of the above 
A) a sulfate ester 
B) a $\beta$(1$\to$4)glycosidic bond 
C) a carboxylate 
D) an amine group that is either acetylated or sulfated 
E) all of the above

Question 17

The two most common amino sugars,$\beta$-D-glucosamine and $\beta$-D-galactosamine are formed from their respective carbohydrates by substitution of an amine group for the hydroxyl on carbon _____.

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
E) 6 
A) 2 
B) 3 
C) 4 
D) 5 
E) 6

Question 18

Which of the following would be the correct Haworth projection for $\alpha$-D-gulose,whose linear form is seen below?

Accepted Answer

A)    
B)    
C)    
D)    
E) None of the above 
A)    
B)    
C)    
D)    
E) None of the above

Question 19

Lactose,the disaccharide of galactose and glucose,is synthesized from which of the following activated monosaccharides?

Accepted Answer

A) uridine triphosphate glucose 
B) uridine triphosphate galactose 
C) uridine diphosphate glucose 
D) uridine diphosphate galactose 
E) none of the above 
A) uridine triphosphate glucose 
B) uridine triphosphate galactose 
C) uridine diphosphate glucose 
D) uridine diphosphate galactose 
E) none of the above

Question 20

The reaction of a cyclic monosaccharide with an alcohol converts a(n)_________ into a(n)________.

Accepted Answer

A) acetal;hemiacetal 
B) hemiacetal;acetal 
C) acetal;ether 
D) hemiacetal;ether 
E) alcohol;ether 
A) acetal;hemiacetal 
B) hemiacetal;acetal 
C) acetal;ether 
D) hemiacetal;ether 
E) alcohol;ether

Exam 9: Carbohydrates: Sugars,saccharides,glycans

The source of nitrogen for the synthesis of glucosamine-6-phosphate from fructose-6-phosphate is the amino acid ___________.

Which of the following is a ketose?

The role of collagen in vertebrate bones as a matrix for mineral deposition is most analogous to the role of _________ in ___________.

An N-linked glycan would be attached to ______ while an O-linked glycan would be attached to ________.

Which of the following polysaccharides contains exclusively glucose in β\betaβ (1 →\to→ 4)glycosidic bonds?

Which of the following formulas would be a carbohydrate

Which of the following is a diastereomer of D-mannose?

Draw a β\betaβ -disaccharide composed of glucose linked to its C-2 epimer by an α\alphaα (1 →\to→ 4)glycosidic bond with the anomeric carbon of glucose contributing to the glycosidic bond.

Oseltamivir,also known as Tamiflu,is effective as an antiviral against the influenza virus due to its ability to block the action of which protein associated with the surface of the viral particle?

Which of the following explains the importance of sucrose as a disaccharide?

Show the interaction that would take place between the R-group of asparagine in a protein and the substituent on C-2 of an N-acetylglucosamine residue of a glycan.

Of the following phosphate esters of monosaccharides,which has the most spontaneous Δ\DeltaΔ G ∘\circ∘ ´ of hydrolysis?

Which of the following designations best characterizes the following disaccharide?

Which of the following would be an anomer of α\alphaα -D-galactopyranose?

Using the structure of D-altrose,shown below,show a Haworth projection for the β\betaβ anomer.

All glycosaminoglycans contain which of the following?

The two most common amino sugars, β\betaβ -D-glucosamine and β\betaβ -D-galactosamine are formed from their respective carbohydrates by substitution of an amine group for the hydroxyl on carbon _____.

Which of the following would be the correct Haworth projection for α\alphaα -D-gulose,whose linear form is seen below?

Lactose,the disaccharide of galactose and glucose,is synthesized from which of the following activated monosaccharides?

The reaction of a cyclic monosaccharide with an alcohol converts a(n)_________ into a(n)________.

The Scope of Biochemistry

The Matrix of Life: Weak Interactions in an Aqueous Environment

The Energetics of Life

Nucleic Acids

Introduction to Proteins: the Primary Level of Protein Structure

The Three-Dimensional Structure of Proteins

Protein Function and Evolution

Contractile Proteins and Molecular Motors

Lipids,membranes and Cellular Transport

Enzymes: Biological Catalysts

Chemical Logic of Metabolism

Carbohydrate Metabolism: Glycolysis, gluconeogenesis, glycogen Metabolism, and the Pentose Phosphate Pathway

Citric Acid Cycle and Glyoxylate Cycle

Electron Transport, oxidative Phosphorylation, and Oxygen Metabolism

Photosynthesis

Lipid Metabolism I: Fatty Acids,triacylglycerols,and Lipoproteins

Interorgan and Intracellular Coordination of Energy Metabolism in Vertebrates

Lipid Metabolism Ii: Membrane Lipids, steroids, isoprenoids, and Eicosanoids

Metabolism of Nitrogenous Compounds I: Principles of Biosynthesis, utilization, and Turnover

Metabolism of Nitogenous Compounds Ii: Amino Acids, porphyrins, and Neurotransmitters

Nucleotide Metabolism

Mechanisms of Signal Transduction

Genes,genomes and Chromosomes

Dna Replication

Dna Restructuring: Repair,recombination,rearrangement,amplification

Information Readout: Transcription and Post-Transcriptional Processing

Information Decoding: Translation and Post-Translational Protein Processing

Regulation of Gene Expression

Filters

The role of collagen in vertebrate bones as a matrix for mineral deposition is most analogous to the role of _ in ___.

An N-linked glycan would be attached to while an O-linked glycan would be attached to __.

Which of the following polysaccharides contains exclusively glucose in $\beta$ (1 $\to$ 4)glycosidic bonds?

Draw a $\beta$ -disaccharide composed of glucose linked to its C-2 epimer by an $\alpha$ (1 $\to$ 4)glycosidic bond with the anomeric carbon of glucose contributing to the glycosidic bond.

Of the following phosphate esters of monosaccharides,which has the most spontaneous $\Delta$ G^$\circ$´ of hydrolysis?

Which of the following would be an anomer of $\alpha$ -D-galactopyranose?

Using the structure of D-altrose,shown below,show a Haworth projection for the $\beta$ anomer. $Using the structure of D-altrose,shown below,show a Haworth projection for the \beta anomer.$

The two most common amino sugars, $\beta$ -D-glucosamine and $\beta$ -D-galactosamine are formed from their respective carbohydrates by substitution of an amine group for the hydroxyl on carbon _____.

Which of the following would be the correct Haworth projection for $\alpha$ -D-gulose,whose linear form is seen below? $Which of the following would be the correct Haworth projection for \alpha -D-gulose,whose linear form is seen below?$

The reaction of a cyclic monosaccharide with an alcohol converts a(n)_ into a(n).