Question 1

Which of the following describes the relationship between dihydroxyacetone phosphate and glyceraldehyde 3-phosphate?

Accepted Answer

A)  They are anomers. 
B)  They are enantiomers. 
C)  They are isomers. 
D)  There is no special relationship between them. 
A)  They are anomers. 
B)  They are enantiomers. 
C)  They are isomers. 
D)  There is no special relationship between them.

Question 2

Which of the following describes the relationship between glucose 6-phosphate and fructose 6-phosphate?

Accepted Answer

A)  They are anomers. 
B)  They are enantiomers. 
C)  They are isomers. 
D)  There is no special relationship between them. 
A)  They are anomers. 
B)  They are enantiomers. 
C)  They are isomers. 
D)  There is no special relationship between them.

Question 3

Phosphofructokinase is involved in the conversion of fructose 6-phosphate to which of the following?

Accepted Answer

A)  fructose 1-phosphate 
B)  fructose 1,6-bisphosphate 
C)  glucose 1,6-bisphosphate 
D)  none of these 
A)  fructose 1-phosphate 
B)  fructose 1,6-bisphosphate 
C)  glucose 1,6-bisphosphate 
D)  none of these

Question 4

The conversion of ribose to deoxyribose is an example of which of the following?

Accepted Answer

A)  dehydration 
B)  oxidation 
C)  reduction 
D)  tautomerization 
A)  dehydration 
B)  oxidation 
C)  reduction 
D)  tautomerization

Question 5

Which enzyme is involved in the conversion of phosphoenolpyruvate to pyruvate?

Accepted Answer

A)  enolase 
B)  ketolase 
C)  pyruvate kinase 
D)  pyruvate oxidase 
A)  enolase 
B)  ketolase 
C)  pyruvate kinase 
D)  pyruvate oxidase

Question 6

Which of the following is the cause of muscle cramps associated with strenuous exercise?

Accepted Answer

A)  acetate 
B)  citrate 
C)  lactate 
D)  pyruvate 
A)  acetate 
B)  citrate 
C)  lactate 
D)  pyruvate

Question 7

The color changes associated with bruises are associated with which type of chemical reaction?

Accepted Answer

A)  deamination 
B)  phosphorylation 
C)  redox 
D)  transamination 
A)  deamination 
B)  phosphorylation 
C)  redox 
D)  transamination

Question 8

The accumulation of ketone bodies in the blood results in which of the following?

Accepted Answer

A)  a decrease in the pH of the blood 
B)  no effect on the pH of the blood 
C)  an increase in the pH of the blood 
D)  an increase in [Na+] in the interstitial fluids 
A)  a decrease in the pH of the blood 
B)  no effect on the pH of the blood 
C)  an increase in the pH of the blood 
D)  an increase in [Na+] in the interstitial fluids

Question 9

Which of the following is(are) consumed in the process of converting glycerol to dihydroxyacetone phosphate?

Accepted Answer

A)  ATP 
B)  NAD+ 
C)  both a and b 
D)  neither a nor b 
A)  ATP 
B)  NAD+ 
C)  both a and b 
D)  neither a nor b

Question 10

The accumulation of ketone bodies in the blood results in which of the following?

Accepted Answer

A)  a decrease in [Na+] in the interstitial fluids 
B)  an increase in the pH of the blood 
C)  both a and b 
D)  neither a nor b 
A)  a decrease in [Na+] in the interstitial fluids 
B)  an increase in the pH of the blood 
C)  both a and b 
D)  neither a nor b

Question 11

α-Ketoglutarate is involved in both transamination and oxidative deamination. Which of the following describes its involvement in these two processes?

Accepted Answer

A)  It is a product of both transamination and oxidative deamination. 
B)  It is a reactant in both transamination and oxidative deamination. 
C)  It is a reactant in oxidative deamination and a product in transamination. 
D)  It is a reactant in transamination and a product in oxidative deamination. 
A)  It is a product of both transamination and oxidative deamination. 
B)  It is a reactant in both transamination and oxidative deamination. 
C)  It is a reactant in oxidative deamination and a product in transamination. 
D)  It is a reactant in transamination and a product in oxidative deamination.

Question 12

The formation of acetone from acetoacetate is an example of which of the following type of reaction?

Accepted Answer

A)  decarboxylation 
B)  hydrolysis 
C)  reduction 
D)  oxidation 
A)  decarboxylation 
B)  hydrolysis 
C)  reduction 
D)  oxidation

Question 13

Phenylketonuria, PKU, is associated with which of the following?

Accepted Answer

A)  the accumulation of phenylalanine 
B)  the conversion of phenylalanine to phenylpyruvate 
C)  the conversion of phenylalanine to tyrosine 
D)  none of the above 
A)  the accumulation of phenylalanine 
B)  the conversion of phenylalanine to phenylpyruvate 
C)  the conversion of phenylalanine to tyrosine 
D)  none of the above

Question 14

Consider the following reaction sequence.  
-Which of the following products result from the action of lipases on lipids?

Accepted Answer

A)  fatty acids 
B)  glycerol 
C)  monoglycerides 
D)  all of these 
A)  fatty acids 
B)  glycerol 
C)  monoglycerides 
D)  all of these

Question 15

In glycerol 3-phosphate transport, found in muscle and nerve cells, how many ATP molecules are produced for each NADH + H+?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 16

Which of the following enzymes is associated with the removal of a C2 fragment from the fatty acid?

Accepted Answer

A)  acyl CoA dehydrogenase 
B)  carnitine 
C)  hydroxyacyldehydrogenase 
D)  thiolase 
A)  acyl CoA dehydrogenase 
B)  carnitine 
C)  hydroxyacyldehydrogenase 
D)  thiolase

Question 17

Which of the following amino acids is ketogenic but not glucogenic?

Accepted Answer

A)  alanine 
B)  leucine 
C)  serine 
D)  tyrosine 
A)  alanine 
B)  leucine 
C)  serine 
D)  tyrosine

Question 18

The formation of β-hydroxybutyrate from acetoacetate is an example of which of the following type of reaction?

Accepted Answer

A)  decarboxylation 
B)  hydrolysis 
C)  reduction 
D)  oxidation 
A)  decarboxylation 
B)  hydrolysis 
C)  reduction 
D)  oxidation

Question 19

Consider the following reaction sequence.  
-Which of the following is true of pathways by which energy is extracted from carbohydrates and glycerol?

Accepted Answer

A)  They are both glycolysis pathways, but are different from one another. 
B)  They are the same as one another. 
C)  The pathway for carbohydrates does not involve glycolysis, but that for glycerol does. 
D)  The pathway for glycerol does not involve glycolysis, but that for carbohydrates does. 
A)  They are both glycolysis pathways, but are different from one another. 
B)  They are the same as one another. 
C)  The pathway for carbohydrates does not involve glycolysis, but that for glycerol does. 
D)  The pathway for glycerol does not involve glycolysis, but that for carbohydrates does.

Question 20

When one molecule of glucose undergoes glycolysis, two molecules of pyruvate are produced; the pyruvates then undergoes oxidative decarboxylation to yield two acetyl CoA. How many net molecules of ATP are produced by the oxidative decarboxylation of two molecules of pyruvate to yield two acetyl CoA?

Accepted Answer

A)  2 
B)  4 
C)  6 
D)  12 
A)  2 
B)  4 
C)  6 
D)  12

Exam 28: Specific Catabolic Pathways: Carbohydrate, Lipid, and Protein Metabolism

Which of the following describes the relationship between dihydroxyacetone phosphate and glyceraldehyde 3-phosphate?

Which of the following describes the relationship between glucose 6-phosphate and fructose 6-phosphate?

Phosphofructokinase is involved in the conversion of fructose 6-phosphate to which of the following?

The conversion of ribose to deoxyribose is an example of which of the following?

Which enzyme is involved in the conversion of phosphoenolpyruvate to pyruvate?

Which of the following is the cause of muscle cramps associated with strenuous exercise?

The color changes associated with bruises are associated with which type of chemical reaction?

The accumulation of ketone bodies in the blood results in which of the following?

Which of the following is(are) consumed in the process of converting glycerol to dihydroxyacetone phosphate?

The accumulation of ketone bodies in the blood results in which of the following?

α-Ketoglutarate is involved in both transamination and oxidative deamination. Which of the following describes its involvement in these two processes?

The formation of acetone from acetoacetate is an example of which of the following type of reaction?

Phenylketonuria, PKU, is associated with which of the following?

Consider the following reaction sequence. -Which of the following products result from the action of lipases on lipids?

In glycerol 3-phosphate transport, found in muscle and nerve cells, how many ATP molecules are produced for each NADH + H+?

Which of the following enzymes is associated with the removal of a C2 fragment from the fatty acid?

Which of the following amino acids is ketogenic but not glucogenic?

The formation of β-hydroxybutyrate from acetoacetate is an example of which of the following type of reaction?

Consider the following reaction sequence. -Which of the following is true of pathways by which energy is extracted from carbohydrates and glycerol?

Matter, Energy, and Measurement

Atoms

Chemical Bonds

Chemical Reactions

Gases, Liquids, and Solids

Solutions and Colloids

Reaction Rates and Chemical Equilibrium

Acids and Bases

Nuclear Chemistry

Organic Chemistry

Alkanes

Alkenes and Alkynes

Benzene and Its Derivatives

Alcohols, Ethers, and Thiols

Chirality: the Handedness of Molecules

Amines

Aldehydes and Ketones

Carboxylic Acids

Carboxylic Anhydrides, Esters, and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Chemical Communications: Neurotransmitters and Hormones

Nucleotides, Nucleic Acids, and Heredity

Gene Expression and Protein Synthesis

Bioenergetics: How the Body Converts Food to Energy

Biosynthetic Pathways

Nutrition

Immunochemistry

Body Fluids

Filters

In glycerol 3-phosphate transport, found in muscle and nerve cells, how many ATP molecules are produced for each NADH + H⁺?

Which of the following enzymes is associated with the removal of a C₂ fragment from the fatty acid?