Question 1

One of the functions of simple sugars includes

Accepted Answer

A)  enzymatically removing glycans through hydrolysis reactions. 
B)  functioning as a structural component in invertebrate exoskeletons. 
C)  acting as metabolic intermediates in energy conversion pathways. 
D)  enzymatically linking glycans to proteins and lipids. 
A)  enzymatically removing glycans through hydrolysis reactions. 
B)  functioning as a structural component in invertebrate exoskeletons. 
C)  acting as metabolic intermediates in energy conversion pathways. 
D)  enzymatically linking glycans to proteins and lipids.

Question 2

Compare the information about glycan structure that is determined from liquid chromatography with the information obtained from mass spectrometry.

Accepted Answer

High-performance liquid chromatography p

Question 3

What is the first step when analyzing glycan groups on a glycoprotein?

Accepted Answer

A)  The glycan groups must undergo liquid chromatography to separate the different components of the mixture. 
B)  Mass spectrometry should be used to identify the glycans based on their mass to charge ratio. 
C)  The glycan groups must be separated from the protein moiety using a cleavage reaction. 
D)  The glycan groups must undergo column chromatography to separate the glycan groups from the lipid moiety. 
A)  The glycan groups must undergo liquid chromatography to separate the different components of the mixture. 
B)  Mass spectrometry should be used to identify the glycans based on their mass to charge ratio. 
C)  The glycan groups must be separated from the protein moiety using a cleavage reaction. 
D)  The glycan groups must undergo column chromatography to separate the glycan groups from the lipid moiety.

Question 4

What would the predicted enzymatic product be when cellulose is exposed to cellulase?

Accepted Answer

A)  pectin 
B)  hemicellulose 
C)  cellotetraose 
D)  glucose 
A)  pectin 
B)  hemicellulose 
C)  cellotetraose 
D)  glucose

Question 5

What challenges are encountered during the structural characterization of glycans on glycoconjugates? Compare the two approaches used to overcome the characterization challenges presented by glycans.

Accepted Answer

Glycans have multiple bonding arrangemen

Question 6

Compare the glycosyltransferase enzyme expression that results in the ABO blood groups.

Accepted Answer

Human ABO blood types are determined by

Question 7

A person who only expresses the GTB enzyme and not the GTA enzyme will have which blood type?

Accepted Answer

A)  O 
B)  A 
C)  B 
D)  AB 
A)  O 
B)  A 
C)  B 
D)  AB

Question 8

Gram-positive bacteria have a peptidoglycan layer that consists of __________,which provides structural support and influences the uptake of charged biomolecules.

Accepted Answer

A)  starch 
B)  lipopolysaccharides 
C)  lipoteichoic acid 
D)  hyaluronic acid 
A)  starch 
B)  lipopolysaccharides 
C)  lipoteichoic acid 
D)  hyaluronic acid

Question 9

Gram-negative bacteria resist staining with crystal violet because Gram-negative bacteria have a(n)

Accepted Answer

A)  outer membrane layer that collapses, releasing the crystal violet molecules. 
B)  thinner peptidoglycan layer that does not retain the crystal violet molecules. 
C)  thinner peptidoglycan layer that collapses, releasing the crystal violet molecules. 
D)  thicker peptidoglycan layer that collapses, releasing the crystal violet molecules. 
A)  outer membrane layer that collapses, releasing the crystal violet molecules. 
B)  thinner peptidoglycan layer that does not retain the crystal violet molecules. 
C)  thinner peptidoglycan layer that collapses, releasing the crystal violet molecules. 
D)  thicker peptidoglycan layer that collapses, releasing the crystal violet molecules.

Question 10

Both methicillin and penicillin are inactive when exposed to

Accepted Answer

A)  transpeptidase. 
B)  transpeptidase and  -lactamase. 
C)    -lactamase. 
D)  variant transpeptidase. 
A)  transpeptidase. 
B)  transpeptidase and  -lactamase. 
C)    -lactamase. 
D)  variant transpeptidase.

Question 11

Give an example of a mono-,di-,and polysaccharide and explain the biological importance
of each.

Accepted Answer

Answers will vary depending on the examp

Question 12

What type of antibody or antibodies is/are found in the plasma of a person with type A blood?

Accepted Answer

A)  anti-A 
B)  anti-B 
C)  neither anti-A or anti-B 
D)  both anti-A and anti-B 
A)  anti-A 
B)  anti-B 
C)  neither anti-A or anti-B 
D)  both anti-A and anti-B

Question 13

What type of bond is responsible for the rigid nature of the polysaccharide fibril structure?

Accepted Answer

A)  London forces 
B)  ionic bonds 
C)  covalent bonds 
D)  hydrogen bonds 
A)  London forces 
B)  ionic bonds 
C)  covalent bonds 
D)  hydrogen bonds

Question 14

Why are some bacteria resistant to penicillin?

Accepted Answer

Some bacteria produce an enzyme called @#IMG-DLM&_

Question 15

Compared with amylopectin,amylose has __________ glycosidic bonds.

Accepted Answer

A)  more  -1,6 
B)  fewer  -1,6 
C)  only  -1,4 
D)  only  -1,6 
A)  more  -1,6 
B)  fewer  -1,6 
C)  only  -1,4 
D)  only  -1,6

Question 16

The glycan fragment shown on the right has been cleaved by glycosylase enzymes,and HPLC analysis has produced the peaks 1 to 6.     Which of the following fragments corresponds to peak 5?

Accepted Answer

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

Question 17

What method is used to release the O-linked glycan groups from the membrane-associated glycoconjugates shown in 2 in the figure below?

Accepted Answer

A)  enzymatic cleavage using PNGaseF 
B)  chemical cleavage using a  -elimination reaction 
C)  chemical cleavage using a Schiff base intermediate 
D)  enzymatic cleavage using  -galactosidase 
A)  enzymatic cleavage using PNGaseF 
B)  chemical cleavage using a  -elimination reaction 
C)  chemical cleavage using a Schiff base intermediate 
D)  enzymatic cleavage using  -galactosidase

Question 18

Two homozygous parents express the GTA glycosyltransferase.What is the probability of a child with an A blood type?

Accepted Answer

A)  0% 
B)  25% 
C)  75% 
D)  100% 
A)  0% 
B)  25% 
C)  75% 
D)  100%

Question 19

Compare and contrast the structure of chitin and cellulose.

Accepted Answer

Both contain @#IMG-DLM&_TB6697_11 -1,4 g

Question 20

Which glycan contains a covalently linked dimeric protein that functions as a protein anchor?

Accepted Answer

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

Exam 13: Carbohydrate Structure and Function

One of the functions of simple sugars includes

Compare the information about glycan structure that is determined from liquid chromatography with the information obtained from mass spectrometry.

What is the first step when analyzing glycan groups on a glycoprotein?

What would the predicted enzymatic product be when cellulose is exposed to cellulase?

What challenges are encountered during the structural characterization of glycans on glycoconjugates? Compare the two approaches used to overcome the characterization challenges presented by glycans.

Compare the glycosyltransferase enzyme expression that results in the ABO blood groups.

A person who only expresses the GTB enzyme and not the GTA enzyme will have which blood type?

Gram-positive bacteria have a peptidoglycan layer that consists of __________,which provides structural support and influences the uptake of charged biomolecules.

Gram-negative bacteria resist staining with crystal violet because Gram-negative bacteria have a(n)

Both methicillin and penicillin are inactive when exposed to

Give an example of a mono-,di-,and polysaccharide and explain the biological importance of each.

What type of antibody or antibodies is/are found in the plasma of a person with type A blood?

What type of bond is responsible for the rigid nature of the polysaccharide fibril structure?

Why are some bacteria resistant to penicillin?

Compared with amylopectin,amylose has __________ glycosidic bonds.

The glycan fragment shown on the right has been cleaved by glycosylase enzymes,and HPLC analysis has produced the peaks 1 to 6. Which of the following fragments corresponds to peak 5?

What method is used to release the O-linked glycan groups from the membrane-associated glycoconjugates shown in 2 in the figure below?

Two homozygous parents express the GTA glycosyltransferase.What is the probability of a child with an A blood type?

Compare and contrast the structure of chitin and cellulose.

Which glycan contains a covalently linked dimeric protein that functions as a protein anchor?

Principles of Biochemistry

Physical Biochemistry: Energy Conversion,water,and Membranes

Nucleic Acid Structure and Function

Protein Structure

Methods in Protein Biochemistry

Protein Function

Enzyme Mechanisms

Cell Signaling Systems

Glycolysis: a Paradigm of Metabolic Regulation

The Citrate Cycle

Oxidative Phosphorylation

Photosynthesis

Carbohydrate Metabolism

Lipid Structure and Function

Lipid Metabolism

Amino Acid Metabolism

Nucleotide Metabolism

Metabolic Integration

Dna Replication, repair, and Recombination

Rna Synthesis, processing, and Gene Silencing

Protein Synthesis, posttranslational Modification, and Transport

Gene Regulation

Filters