Question 1

What type of enzyme catalyzes the intramolecular shift of a chemical group?

Accepted Answer

A)   hydrolase
B)   kinase
C)   dehydrogenase
D)   mutase
E)   None of the above.F) A) and E)
G) A) and C) D

Question 2

What are glucose transporters and how do the different types of transporters differ?

Accepted Answer

Glucose transporters mediate the thermod...

Question 3

Choose the correct answer from the list below. Not all of the answers will be used.
-____________ is the enzyme responsible for converting galactose to be used in the glycolytic pathway.

Accepted Answer

A)  obligate anaerobes
B)  AMP
C)  pyruvate
D)  NAD+
E)  glucoseF) UDP-glucoseG) GLUT5H) facultative anaerobesI) ATPJ) magnesiumK) galactokinaseL) GLUT2M) galactose isomeraseN) A) and B)
O) C) and H)

Question 4

Glycolysis produces a net of ______________ moles of ATP per 1 mole of glucose.

Accepted Answer

The answer of Glycolysis produces a net of ______________ moles...

Question 5

Why is glucose the most stable hexose?

Accepted Answer

The hydroxyl groups and the hy...

Question 6

In the absence of oxygen, ______________ increases the expression of most glycolytic enzymes and the glucose transporters GLUT1 and GLUT3.

Accepted Answer

HIF-1, or ...

Question 7

Choose the correct answer from the list below. Not all of the answers will be used.
-____________ is the principle carbohydrate in living systems.

Accepted Answer

A)  obligate anaerobes
B)  AMP
C)  pyruvate
D)  NAD+
E)  glucoseF) UDP-glucoseG) GLUT5H) facultative anaerobesI) ATPJ) magnesiumK) galactokinaseL) GLUT2M) galactose isomeraseN) B) and D)
O) E) and I)

Question 8

How is glycolysis maintained under anaerobic conditions?

Accepted Answer

Pyruvate can be reduced to eit...

Question 9

A potent allosteric activator of liver phosphofructokinase is ______________, which is produced from fructose-6-phosphate by PFK2.

Accepted Answer

fructose-2...

Question 10

In alcoholic fermentation, the decarboxylation of pyruvate requires a coenzyme that contains the vitamin ______________.

Accepted Answer

The answer of In alcoholic fermentation, the decarboxylation of pyruvate...

Question 11

Describe the biochemical explanation for galactosemia.

Accepted Answer

Galactose is metabolized by conversion t...

Question 12

Choose the correct answer from the list below. Not all of the answers will be used.
-The intermediate that is necessary for the conversion of galactose to glucose is ____________.

Accepted Answer

A)  obligate anaerobes
B)  AMP
C)  pyruvate
D)  NAD+
E)  glucoseF) UDP-glucoseG) GLUT5H) facultative anaerobesI) ATPJ) magnesiumK) galactokinaseL) GLUT2M) galactose isomeraseN) C) and F)
O) A) and C)

Question 13

What is the function of glyceraldehyde 3-phosphate dehydrogenase?

Accepted Answer

A)   oxidation by NAD+ and the formation of acyl phosphate
B)   oxidation of the alcohol to an aldehyde
C)   dehydration and dephosphorylation of GAP
D)   hydrolysis of GAP
E)   None of the above.F) B) and E)
G) A) and D) A

Question 14

Glucose is the most stable hexose because the hydroxyl groups are all in the ______________position.

Accepted Answer

The answer of Glucose is the most stable hexose because...

Question 15

Choose the correct answer from the list below. Not all of the answers will be used.
-____________: These organisms cannot survive in the presence of oxygen.

Accepted Answer

A)  obligate anaerobes
B)  AMP
C)  pyruvate
D)  NAD+
E)  glucoseF) UDP-glucoseG) GLUT5H) facultative anaerobesI) ATPJ) magnesiumK) galactokinaseL) GLUT2M) galactose isomeraseN) F) and H)
O) C) and G)

Question 16

What reaction is catalyzed by aldolase?

Accepted Answer

A)   isomerization of DHAP to GAP
B)   ligation of GAP and DHAP
C)   reversible cleavage of F-1,6-BP to DHAP and GAP
D)   cleavage of DHAP to GAP
E)   irreversible aldol condensation of DHAP and GAPF) A) and E)
G) A) and B)

Question 17

Why is it important that the glycolytic and gluconeogenic pathways are reciprocally regulated?

Accepted Answer

Glycolysis is stimulated when the energy...

Question 18

Which two 3-carbon molecules are generated by the cleavage of fructose-1,6-bisphosphate?

Accepted Answer

A)   glyceraldehyde-3-phosphate and 3-phosphoglycerate
B)   glyceraldehyde-3-phosphate and dihydroxyacetone phosphate
C)   pyruvate and phosphoenolpyruvate
D)   enolase and 2-phosphoglycerate
E)   glyceraldehyde-3-phosphate and pyruvateF) C) and D)
G) A) and C)

Question 19

What is the function of a thioester intermediate such as the one formed from GAP?

Accepted Answer

A)   It speeds up the actual reaction so that more product can be made.
B)   The thioester shifts the equilibrium of the first stage of the reaction.
C)   The thioester allows the two-step reaction to be coupled so the second reaction, the energetically unfavorable phosphorylation, can proceed.
D)   The thioester intermediate induces a conformational change that alters the enzyme specificity.
E)   The thioester prevents the formation of metabolically unfavorable side products.F) C) and D)
G) B) and E)

Question 20

How are the glycolytic enzymes regulated?

Accepted Answer

A)   through transcriptional control
B)   through reversible phosphorylation
C)   through allosteric control
D)   All of the above.
E)   None of the above.F) A) and E)
G) A) and C) D

Exam 16: Glycolysis

What type of enzyme catalyzes the intramolecular shift of a chemical group?

Correct AnswerverifiedD

What are glucose transporters and how do the different types of transporters differ?

Correct AnswerverifiedGlucose transporters mediate the thermod...View AnswerShow Answer

Choose the correct answer from the list below. Not all of the answers will be used. -____________ is the enzyme responsible for converting galactose to be used in the glycolytic pathway.

Correct AnswerverifiedShow Answer

Glycolysis produces a net of ______________ moles of ATP per 1 mole of glucose.

Correct AnswerverifiedShow Answer

Why is glucose the most stable hexose?

Correct AnswerverifiedThe hydroxyl groups and the hy...View AnswerShow Answer

In the absence of oxygen, ______________ increases the expression of most glycolytic enzymes and the glucose transporters GLUT1 and GLUT3.

Correct AnswerverifiedHIF-1, or ...View AnswerShow Answer

Choose the correct answer from the list below. Not all of the answers will be used. -____________ is the principle carbohydrate in living systems.

Correct AnswerverifiedShow Answer

How is glycolysis maintained under anaerobic conditions?

Correct AnswerverifiedPyruvate can be reduced to eit...View AnswerShow Answer

A potent allosteric activator of liver phosphofructokinase is ______________, which is produced from fructose-6-phosphate by PFK2.

Correct Answerverifiedfructose-2...View AnswerShow Answer

In alcoholic fermentation, the decarboxylation of pyruvate requires a coenzyme that contains the vitamin ______________.

Correct AnswerverifiedShow Answer

Describe the biochemical explanation for galactosemia.

Correct AnswerverifiedGalactose is metabolized by conversion t...View AnswerShow Answer

Choose the correct answer from the list below. Not all of the answers will be used. -The intermediate that is necessary for the conversion of galactose to glucose is ____________.

Correct AnswerverifiedShow Answer

What is the function of glyceraldehyde 3-phosphate dehydrogenase?

Correct AnswerverifiedA

Glucose is the most stable hexose because the hydroxyl groups are all in the ______________position.

Correct AnswerverifiedShow Answer

Choose the correct answer from the list below. Not all of the answers will be used. -____________: These organisms cannot survive in the presence of oxygen.

Correct AnswerverifiedShow Answer

What reaction is catalyzed by aldolase?

Correct AnswerverifiedShow Answer

Why is it important that the glycolytic and gluconeogenic pathways are reciprocally regulated?

Correct AnswerverifiedGlycolysis is stimulated when the energy...View AnswerShow Answer

Which two 3-carbon molecules are generated by the cleavage of fructose-1,6-bisphosphate?

Correct AnswerverifiedShow Answer

What is the function of a thioester intermediate such as the one formed from GAP?

Correct AnswerverifiedShow Answer

How are the glycolytic enzymes regulated?

Correct AnswerverifiedD

Correct Answer
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D

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Glucose transporters mediate the thermod...
View Answer

Correct Answer
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The hydroxyl groups and the hy...
View Answer

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HIF-1, or ...
View Answer

Correct Answer
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Correct Answer
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Pyruvate can be reduced to eit...
View Answer

Correct Answer
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fructose-2...
View Answer

Correct Answer
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Correct Answer
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Galactose is metabolized by conversion t...
View Answer

Correct Answer
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Correct Answer
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A

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified
Glycolysis is stimulated when the energy...
View Answer

Correct Answer
verified

Correct Answer
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Correct Answer
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D