Question 1

Why is glucose the most stable hexose?

Accepted Answer

The hydroxyl groups and the hy

Question 2

Use the following to answer questions
Choose the correct answer from the list below. Not all of the answers will be used.
-____________: This molecule is an allosteric inhibitor of phosphofructokinase.

Accepted Answer

A) obligate anaerobes 
B) AMP 
C) pyruvate 
D) NAD+ 
E) glucose
F)UDP-glucose
G)GLUT5
H)facultative anaerobes
I)ATP
J)magnesium
K)galactokinase
L)GLUT2
M)galactose isomerase 
A) obligate anaerobes 
B) AMP 
C) pyruvate 
D) NAD+ 
E) glucose
F)UDP-glucose
G)GLUT5
H)facultative anaerobes
I)ATP
J)magnesium
K)galactokinase
L)GLUT2
M)galactose isomerase

Question 3

The first irreversible enzymatic reaction unique to a metabolic pathway is called the ______________ step

Accepted Answer

The answer of The first irreversible enzymatic reaction unique to...

Question 4

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. 
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.

Question 5

Which two isomerization reactions occur in glycolysis? Why are these steps necessary?

Accepted Answer

Glucose 6-phosphate is isomerized to fru

Question 6

The regeneration of ______________ in the reduction of pyruvate to lactate sustains glycolysis under anaerobic conditions.

Accepted Answer

The answer of The regeneration of ______________ in the reduction...

Question 7

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 pyruvate 
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 pyruvate

Question 8

Use the following to answer questions
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) glucose
F)UDP-glucose
G)GLUT5
H)facultative anaerobes
I)ATP
J)magnesium
K)galactokinase
L)GLUT2
M)galactose isomerase 
A) obligate anaerobes 
B) AMP 
C) pyruvate 
D) NAD+ 
E) glucose
F)UDP-glucose
G)GLUT5
H)facultative anaerobes
I)ATP
J)magnesium
K)galactokinase
L)GLUT2
M)galactose isomerase

Question 9

Which of the following is a reason that glucose is a common metabolic fuel used by living organisms?

Accepted Answer

A)  It has a stable ring structure and is unlikely to glycosylate proteins. 
B)  It has been found as one of the monosaccharides formed under prebiotic conditions. 
C)  It is the only sugar used by the brain. 
D)  A and B. 
E)  A, B, and C. 
A)  It has a stable ring structure and is unlikely to glycosylate proteins. 
B)  It has been found as one of the monosaccharides formed under prebiotic conditions. 
C)  It is the only sugar used by the brain. 
D)  A and B. 
E)  A, B, and C.

Question 10

The key regulatory enzyme for glycolysis is ______________.

Accepted Answer

The answer of The key regulatory enzyme for glycolysis is...

Exam 16: Glycolysis

Why is glucose the most stable hexose?

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -____________: This molecule is an allosteric inhibitor of phosphofructokinase.

The first irreversible enzymatic reaction unique to a metabolic pathway is called the ______________ step

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

Which two isomerization reactions occur in glycolysis? Why are these steps necessary?

The regeneration of ______________ in the reduction of pyruvate to lactate sustains glycolysis under anaerobic conditions.

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

Use the following to answer questions 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.

Which of the following is a reason that glucose is a common metabolic fuel used by living organisms?

The key regulatory enzyme for glycolysis is ______________.

Biochemistry and the Unity of Life

Water, Weak Bonds, and the Generation of Order Out of Chaos

Amino Acids

Protein Three-Dimensional Structure

Techniques in Protein Biochemistry

Basic Concepts of Enzyme Action

Kinetics and Regulation

Mechanisms and Inhibitors

Hemoglobin: an Allosteric Protein

Carbohydrates

Lipids

Membrane Structure and Function

Signal Transduction Pathways

Digestion: Turning a Meal Into Cellular Biochemicals

Metabolism: Basic Concepts and Design

Gluconeogenesis

Preparation for the Cycle

Harvesting Electrons From the Cycle

The Electron Transport Chain

The Proton-Motive Force

The Light Reactions

The Calvin Cycle

Glycogen Degradation

Glycogen Synthesis

The Pentose Phosphate Pathway

Fatty Acid Degredation

Fatty Acid Synthesis

Lipid Synthesis

Amino Acid Degradation and the Urea Cycle

Amino Acids Synthesis

Nucleotide Metabolism

The Structure of Informational Macromolecules: Dna and Rna

DNA Replication

DNA Repair and Recombination

RNA Synthesis and Regulation in Prokaryotes

Gene Expression in Eukaryotes

RNA Processing in Eukaryotes

The Genetic Code

The Mechanism of Protein Synthesis

Recombinant Dna Techniques

Filters