Question 1

In the conversion of ribulose-5-phosphate to glycolytic intermediates, which of the following enzymes is used?

Accepted Answer

A)  phosphoglucomutase 
B)  transketolase 
C)  phosphoglycerate mutase 
D)  phosphofructoisomerase 
E)  none of the above 
A)  phosphoglucomutase 
B)  transketolase 
C)  phosphoglycerate mutase 
D)  phosphofructoisomerase 
E)  none of the above B

Question 2

The initial addition of oligosaccharides of N-glycosylated proteins occurs in the _____.

Accepted Answer

A)  lysosome 
B)  Golgi apparatus 
C)  endoplasmic reticulum 
D)  vacuole 
E)  cytoplasm 
A)  lysosome 
B)  Golgi apparatus 
C)  endoplasmic reticulum 
D)  vacuole 
E)  cytoplasm C

Question 3

The main component of a bacterial cell wall is a ______.

Accepted Answer

peptidoglycan

Question 4

Both glycogen synthesis and glycogen breakdown share the metabolite ______.

Accepted Answer

The answer of Both glycogen synthesis and glycogen breakdown share...

Question 5

In a _____, the carbohydrate is responsible for most of the mass; in a _____, the protein is responsible for most of the mass.

Accepted Answer

A)  glycoprotein; proteoglycan 
B)  proteoglycan; glycoprotein 
C)  N-linked glycoprotein; O-linked glycoprotein 
D)  O-linked glycoprotein; N-linked glycoprotein 
E)  N-linked proteoglycan; O-linked glycoprotein proteoglycan 
A)  glycoprotein; proteoglycan 
B)  proteoglycan; glycoprotein 
C)  N-linked glycoprotein; O-linked glycoprotein 
D)  O-linked glycoprotein; N-linked glycoprotein 
E)  N-linked proteoglycan; O-linked glycoprotein proteoglycan

Question 6

Which statement is true concerning the metabolic reaction shown below?

Accepted Answer

A)  The enzyme that catalyzes this reaction is called a mutase. 
B)  The enzyme that catalyzes this reaction is called a kinase. 
C)  This reaction requires the free energy of ATP hydrolysis. 
D)  This reaction requires multiple steps catalyzed by a phosphorylase and a mutase. 
E)  The oxidation of glucose-1-phosphate is higher than that of glucose-6-phosphate. 
A)  The enzyme that catalyzes this reaction is called a mutase. 
B)  The enzyme that catalyzes this reaction is called a kinase. 
C)  This reaction requires the free energy of ATP hydrolysis. 
D)  This reaction requires multiple steps catalyzed by a phosphorylase and a mutase. 
E)  The oxidation of glucose-1-phosphate is higher than that of glucose-6-phosphate.

Question 7

The active portion of the penicillin molecule is the _____ ring.

Accepted Answer

A)  glucopyranose 
B)  fructofuranose 
C)  five-membered, sulfur-containing 
D)  $\beta$-lactam 
E)  none of the above 
A)  glucopyranose 
B)  fructofuranose 
C)  five-membered, sulfur-containing 
D)  $\beta$-lactam 
E)  none of the above

Question 8

______ is a heteropolymer composed of D-glucoronate and N-acetyl-D-glucosamine that acts as shock absorber and lubricant.

Accepted Answer

The answer of ______ is a heteropolymer composed of D-glucoronate...

Question 9

Which of the following enzymes catalyzes an oxidative decarboxylation reaction?

Accepted Answer

A)  glucose-6-phosphate dehydrogenase 
B)  glyceraldehyde-3-phosphate dehydrogenase 
C)  glycogen dehydrogenase 
D)  6-phosphogluconate dehydrogenase 
E)  none of the above 
A)  glucose-6-phosphate dehydrogenase 
B)  glyceraldehyde-3-phosphate dehydrogenase 
C)  glycogen dehydrogenase 
D)  6-phosphogluconate dehydrogenase 
E)  none of the above

Question 10

Which of the following correctly relates the order of intermediates during the synthesis of glycogen?

Accepted Answer

A)  glucose $\rightarrow$glucose-1-phosphate $\rightarrow$ glucose-6-phosphate $\rightarrow$ UDP-glucose $\rightarrow$glycogen 
B)  glucose $\rightarrow$glucose-6-phosphate $\rightarrow$glucose-1-phosphate $\rightarrow$UDP-glucose $\rightarrow$glycogen 
C)  glucose $\rightarrow$glucose-6-phosphate $\rightarrow$UDP-glucose $\rightarrow$ glucose-1-phosphate $\rightarrow$ glycogen 
D)  glucose $\rightarrow$UDP-glucose $\rightarrow$ glucose-1-phosphate $\rightarrow$ glucose-6-phosphate $\rightarrow$ glycogen 
E)  glucose $\rightarrow$ UDP-glucose $\rightarrow$glucose-6-phosphate $\rightarrow$ glucose-1-phosphate $\rightarrow$0 glycogen 
A)  glucose $\rightarrow$glucose-1-phosphate $\rightarrow$ glucose-6-phosphate $\rightarrow$ UDP-glucose $\rightarrow$glycogen 
B)  glucose $\rightarrow$glucose-6-phosphate $\rightarrow$glucose-1-phosphate $\rightarrow$UDP-glucose $\rightarrow$glycogen 
C)  glucose $\rightarrow$glucose-6-phosphate $\rightarrow$UDP-glucose $\rightarrow$ glucose-1-phosphate $\rightarrow$ glycogen 
D)  glucose $\rightarrow$UDP-glucose $\rightarrow$ glucose-1-phosphate $\rightarrow$ glucose-6-phosphate $\rightarrow$ glycogen 
E)  glucose $\rightarrow$ UDP-glucose $\rightarrow$glucose-6-phosphate $\rightarrow$ glucose-1-phosphate $\rightarrow$0 glycogen

Question 11

NADPH used in lipid biosynthesis is produced by the ______ pathway.

Accepted Answer

The answer of NADPH used in lipid biosynthesis is produced...

Question 12

The main enzyme of glycogen catabolism is _____, which catalyzes a _____ reaction.

Accepted Answer

A)  glycogen hydrolase; hydrolysis 
B)  glycogen phosphorylase; phosphorolysis 
C)  glycogen mutase; mutarotation 
D)  debranching enzyme; hydrolysis 
E)  glycogen transferase; glucose residue transfer 
A)  glycogen hydrolase; hydrolysis 
B)  glycogen phosphorylase; phosphorolysis 
C)  glycogen mutase; mutarotation 
D)  debranching enzyme; hydrolysis 
E)  glycogen transferase; glucose residue transfer

Question 13

The first step in the breakdown of glycogen is catalyzed by ______.

Accepted Answer

The answer of The first step in the breakdown of...

Question 14

For each molecule of glucose-6-phosphate that enters the oxidative phase of the pentose phosphate pathway, _____ NADPH and _____ CO2 are produced.

Accepted Answer

A)  1; 0 
B)  1; 1 
C)  2; 1 
D)  2; 2 
E)  3; 2 
A)  1; 0 
B)  1; 1 
C)  2; 1 
D)  2; 2 
E)  3; 2

Question 15

Which of the following describes glycosaminoglycans?

Accepted Answer

A)  found in extracellular space 
B)  associated with the cytoskeleton 
C)  bound to other proteins to minimize interactions with water 
D)  homopolymer composed of only one type of monosaccharide 
E)  none of the above 
A)  found in extracellular space 
B)  associated with the cytoskeleton 
C)  bound to other proteins to minimize interactions with water 
D)  homopolymer composed of only one type of monosaccharide 
E)  none of the above

Question 16

In the ABO blood type system, how many monosaccharides are found in each of the oligosaccharides for the various blood types?

Accepted Answer

A)  A: 3, B: 4, O: 3 
B)  A: 4, B: 5, O: 4 
C)  A: 6, B: 5, O: 5 
D)  A: 6, B: 6, O: 5 
E)  A: 5, B: 5, O: 4 
A)  A: 3, B: 4, O: 3 
B)  A: 4, B: 5, O: 4 
C)  A: 6, B: 5, O: 5 
D)  A: 6, B: 6, O: 5 
E)  A: 5, B: 5, O: 4

Question 17

Which of the following requires large amounts of ribose-5-phosphate?

Accepted Answer

A)  DNA synthesis 
B)  amino acid synthesis 
C)  lipid synthesis 
D)  glycogen synthesis 
E)  cholesterol synthesis 
A)  DNA synthesis 
B)  amino acid synthesis 
C)  lipid synthesis 
D)  glycogen synthesis 
E)  cholesterol synthesis

Question 18

______ activates glycogen breakdown.

Accepted Answer

The answer of ______ activates glycogen breakdown....

Question 19

The breakdown of glycogen is referred to as ______.

Accepted Answer

The answer of The breakdown of glycogen is referred to...

Exam 8: Carbohydrates II

In the conversion of ribulose-5-phosphate to glycolytic intermediates, which of the following enzymes is used?

The initial addition of oligosaccharides of N-glycosylated proteins occurs in the _____.

The main component of a bacterial cell wall is a ______.

Both glycogen synthesis and glycogen breakdown share the metabolite ______.

In a _____, the carbohydrate is responsible for most of the mass; in a _____, the protein is responsible for most of the mass.

Which statement is true concerning the metabolic reaction shown below?

The active portion of the penicillin molecule is the _____ ring.

______ is a heteropolymer composed of D-glucoronate and N-acetyl-D-glucosamine that acts as shock absorber and lubricant.

Which of the following enzymes catalyzes an oxidative decarboxylation reaction?

Which of the following correctly relates the order of intermediates during the synthesis of glycogen?

NADPH used in lipid biosynthesis is produced by the ______ pathway.

The main enzyme of glycogen catabolism is _____, which catalyzes a _____ reaction.

The first step in the breakdown of glycogen is catalyzed by ______.

For each molecule of glucose-6-phosphate that enters the oxidative phase of the pentose phosphate pathway, _____ NADPH and _____ CO2 are produced.

Which of the following describes glycosaminoglycans?

In the ABO blood type system, how many monosaccharides are found in each of the oligosaccharides for the various blood types?

Which of the following requires large amounts of ribose-5-phosphate?

______ activates glycogen breakdown.

The breakdown of glycogen is referred to as ______.

The Chemical Foundations of Biochemistry

Nucleic Acids

Proteins I

Proteins Iienzymes

Membranes and an Introduction to Signal Transduction

Carbohydrates I

The Common Catabolic Pathway

Lipids I

Lipids II

Amine Metabolism

Metabolism Integration

Nucleotide Deoxynucleotide Metabolism

Dna Replication, Damage and Repair

Rna Synthesis

Protein

Control of Gene

Determination of Macromolecular Structure

Allosterism and Receptor-Ligand

Designer Proteins and Protein Folding

Biomolecule Purification

Bioinformatics and Omics

Signal

Protein Trafficking

Photosynthesis Nitrogen

Filters

In a _, the carbohydrate is responsible for most of the mass; in a _, the protein is responsible for most of the mass.

The main enzyme of glycogen catabolism is _, which catalyzes a _ reaction.

For each molecule of glucose-6-phosphate that enters the oxidative phase of the pentose phosphate pathway, _ NADPH and _ CO₂ are produced.