Question 1

If you received a laboratory report showing the presence of a high concentration of ketone bodies in the urine of a patient,what disease would you suspect? Why do ketone bodies accumulate in such patients?

Accepted Answer

The patient is probably an untreated dia...

Question 2

Briefly explain the basic concept of $ \omega $-oxidation.

Accepted Answer

Relatively short chain fatty acids (i.e....

Question 3

Draw the third and fourth steps in the $\beta$-oxidation of a saturated fatty acid.Show structures,name enzymes,and indicate where any cofactors participate.

Accepted Answer

The reactions are those catalyzed by <img  loading="lazy" src="/assets/images/blured-textbook.svg" class="d-inline m-1" alt="blured image" width="139" height="30">-hy...

Question 4

The oxidation of acetyl-CoA added to isolated,intact mitochondria is stimulated strongly by carnitine.Why?

Accepted Answer

Carnitine is essential in the ...

Question 5

In the citric acid cycle,a double bond is introduced into a four-carbon compound containing the -CH2-CH2- group,producing fumarate.Show a similar reaction that occurs in the $\beta$-oxidation pathway.

Accepted Answer

This is the reaction...

Question 6

Write a balanced equation for the complete oxidation (to acetyl-CoA and any other products that might be formed)of pelargonic acid,CH3(CH2)7COOH.

Accepted Answer

The odd-chain fatty acid is first activa...

Question 7

Which of these is able to cross the inner mitochondrial membrane?

Accepted Answer

A)  Acetyl-CoA
B)  Fatty acyl-carnitine
C)  Fatty acyl-CoA
D)  Malonyl-CoA
E)  None of the above can cross.F) A) and B)
G) A) and C)

Question 8

If the 16-carbon saturated fatty acid palmitate is oxidized completely to carbon dioxide and water (via the  β\betaβ -oxidation pathway and the citric acid cycle) ,and all of the energy-conserving products are used to drive ATP synthesis in the mitochondrion,the net yield of ATP per molecule of palmitate is:

Accepted Answer

A)  3) 
B)  10.
C)  25.
D)  108.
E)  1000. F) B) and C)
G) C) and D)

Question 9

The glycerol produced from the hydrolysis of triacylglycerides enters glycolysis as:

Accepted Answer

A)  glucose.
B)  glucose-6-phosphate.
C)  dihydroxyacetone phosphate.
D)  pyruvate.
E)  glyceryl CoA.F) All of the above
G) B) and C)

Question 10

Lipoprotein lipase acts in:

Accepted Answer

A)  hydrolysis of triacylglycerols of plasma lipoproteins to supply fatty acids to various tissues.
B)  intestinal uptake of dietary fat.
C)  intracellular lipid breakdown of lipoproteins.
D)  lipoprotein breakdown to supply needed amino acids.
E)  none of the above.F) None of the above
G) A) and E)

Exam 17: Fatty Acid Catabolism

In the citric acid cycle,a double bond is introduced into a four-carbon compound containing the -CH₂-CH₂- group,producing fumarate.Show a similar reaction that occurs in the $\beta$ -oxidation pathway.

Correct Answer
verified
This is the reaction...
View Answer

Write a balanced equation for the complete oxidation (to acetyl-CoA and any other products that might be formed)of pelargonic acid,CH₃(CH₂)₇COOH.

Correct Answer
verified
The odd-chain fatty acid is first activa...
View Answer

Briefly explain the basic concept of $\omega$ -oxidation.

Correct Answer
verified
Relatively short chain fatty acids (i.e....
View Answer

Correct Answer
verified

If you received a laboratory report showing the presence of a high concentration of ketone bodies in the urine of a patient,what disease would you suspect? Why do ketone bodies accumulate in such patients?

Correct Answer
verified
The patient is probably an untreated dia...
View Answer

The glycerol produced from the hydrolysis of triacylglycerides enters glycolysis as:

Correct Answer
verified

The oxidation of acetyl-CoA added to isolated,intact mitochondria is stimulated strongly by carnitine.Why?

Correct Answer
verified
Carnitine is essential in the ...
View Answer

Draw the third and fourth steps in the $\beta$ -oxidation of a saturated fatty acid.Show structures,name enzymes,and indicate where any cofactors participate.

Correct Answer
verified
The reactions are those catalyzed by -hy...
View Answer

Lipoprotein lipase acts in:

Correct Answer
verified

Which of these is able to cross the inner mitochondrial membrane?

Correct Answer
verified

Exam 17: Fatty Acid Catabolism

In the citric acid cycle,a double bond is introduced into a four-carbon compound containing the -CH2-CH2- group,producing fumarate.Show a similar reaction that occurs in the β\betaβ -oxidation pathway.

Correct AnswerverifiedThis is the reaction...View AnswerShow Answer

Write a balanced equation for the complete oxidation (to acetyl-CoA and any other products that might be formed)of pelargonic acid,CH3(CH2)7COOH.

Correct AnswerverifiedThe odd-chain fatty acid is first activa...View AnswerShow Answer

Briefly explain the basic concept of ω \omega ω -oxidation.

Correct AnswerverifiedRelatively short chain fatty acids (i.e....View AnswerShow Answer

Correct AnswerverifiedShow Answer

If you received a laboratory report showing the presence of a high concentration of ketone bodies in the urine of a patient,what disease would you suspect? Why do ketone bodies accumulate in such patients?

Correct AnswerverifiedThe patient is probably an untreated dia...View AnswerShow Answer

The glycerol produced from the hydrolysis of triacylglycerides enters glycolysis as:

Correct AnswerverifiedShow Answer

The oxidation of acetyl-CoA added to isolated,intact mitochondria is stimulated strongly by carnitine.Why?

Correct AnswerverifiedCarnitine is essential in the ...View AnswerShow Answer

Draw the third and fourth steps in the β\betaβ -oxidation of a saturated fatty acid.Show structures,name enzymes,and indicate where any cofactors participate.

Correct AnswerverifiedThe reactions are those catalyzed by -hy...View AnswerShow Answer

Lipoprotein lipase acts in:

Correct AnswerverifiedShow Answer

Which of these is able to cross the inner mitochondrial membrane?

Correct AnswerverifiedShow Answer

In the citric acid cycle,a double bond is introduced into a four-carbon compound containing the -CH₂-CH₂- group,producing fumarate.Show a similar reaction that occurs in the $\beta$ -oxidation pathway.

Correct Answer
verified
This is the reaction...
View Answer

Write a balanced equation for the complete oxidation (to acetyl-CoA and any other products that might be formed)of pelargonic acid,CH₃(CH₂)₇COOH.

Correct Answer
verified
The odd-chain fatty acid is first activa...
View Answer

Briefly explain the basic concept of $\omega$ -oxidation.

Correct Answer
verified
Relatively short chain fatty acids (i.e....
View Answer

Correct Answer
verified

Correct Answer
verified
The patient is probably an untreated dia...
View Answer

Correct Answer
verified

Correct Answer
verified
Carnitine is essential in the ...
View Answer

Draw the third and fourth steps in the $\beta$ -oxidation of a saturated fatty acid.Show structures,name enzymes,and indicate where any cofactors participate.

Correct Answer
verified
The reactions are those catalyzed by -hy...
View Answer

Correct Answer
verified

Correct Answer
verified