Question 1

Choose the correct answer from the list below. Not all of the answers will be used.
-The committed step in fatty acid synthesis is inactivated by the regulatory enzyme ________________.

Accepted Answer

A)  malonyl CoA
B)  three
C)  four
D)  C16-acyl ACP
E)  cytosolF) glycolysisG) acetyl CoAH) β-hydroxybutyrateI) acetyl CoA carboylaseJ) AMP-dependent protein kinaseK) oxaloacetateL) malic enzymeM) citrateN) A) and F)
O) G) and L)

Question 2

Double bonds are introduced into fatty acids in the ________________ compartment of the cell.

Accepted Answer

endoplasmi...

Question 3

Choose the correct answer from the list below. Not all of the answers will be used.
-Fatty acid synthesis primarily takes place in the cellular location ________________.

Accepted Answer

A)  malonyl CoA
B)  three
C)  four
D)  C16-acyl ACP
E)  cytosolF) glycolysisG) acetyl CoAH) β-hydroxybutyrateI) acetyl CoA carboylaseJ) AMP-dependent protein kinaseK) oxaloacetateL) malic enzymeM) citrateN) A) and B)
O) C) and J)

Question 4

Which compound inhibits the entry of fatty acyl CoA into the mitochondria as a function of the cell being in the high-energy state?

Accepted Answer

A)   malonyl CoA
B)   carnitine acyltransferase
C)   inhibition of acetyl CoA carboxylase
D)   All of the above.
E)   None of the above.F) A) and B)
G) C) and D)

Question 5

What enzyme catalyzes the committed step in fatty acid synthesis?

Accepted Answer

A)   Enoyl reductase
B)   Acetyl CoA carboxylase
C)   Transacylase reductase
D)   3-Hydroxyacyl dehydratase
E)   None of the above.F) B) and D)
G) B) and C)

Question 6

Acetyl carboxylaseis globally regulated by:

Accepted Answer

A)   allosteric inhibitors and activators
B)   phosphorylation and dephosphorylation.
C)   zymogen activation
D)   h the binding of cAMP.
E)   None of the above.F) A) and C)
G) B) and C)

Question 7

The major product of mammalian fatty acid synthesis is ________________.

Accepted Answer

a C16 fatt...

Question 8

The function of the enzyme acyl CoA synthetase is:

Accepted Answer

A)   lipolysis to release free glyceraldehyde.
B)   ATP-dependent reduction of acetyl-CoA prior to activation.
C)   ATP-dependent activation of fatty acids using CoA.
D)   All of the above.
E)   None of the above.F) C) and E)
G) A) and C)

Question 9

Where are the enzymes for fatty acid elongation and desaturation in eukaryotes?

Accepted Answer

In eukaryotes, the enzymes tha...

Question 10

The carrier of an acyl chain through the synthetic protein complex is:

Accepted Answer

A)   ACP.
B)   a serum albumin.
C)   acetyl coenzyme A.
D)   a biotin-activated complex.
E)   None of the above.F) A) and B)
G) A) and C)

Question 11

Insulin leads to:

Accepted Answer

A)   an activation of fatty acid synthesis.
B)   an inhibition of fatty acid synthesis.
C)   a phosphorylation of proteins
D)   a decrease of protein phosphatase hydrolysis of fatty acid synthesis enzymes
E)   A decrease in pyruvate transport into mitochondriaF) A) and B)
G) A) and C)

Question 12

Describe the chemistry for fatty acid synthesis at the stage when a 2-carbon molecule reacts with a 3-carbon molecule to give a 4-carbon molecule and a 1-carbon molecule..

Accepted Answer

This is the activation and con...

Question 13

The coenzyme required for fatty acid synthesis is ________________.

Accepted Answer

The answer of The coenzyme required for fatty acid synthesis...

Question 14

Prostaglandins and thromboxanes are synthesized from ________________, a 20-carbon fatty acid.

Accepted Answer

The answer of Prostaglandins and thromboxanes are synthesized from ________________,...

Question 15

Describe the allosteric stimulatory effect of citrate on acetyl CoA carboxylase.

Accepted Answer

The inactive form of acetyl Co...

Question 16

Describe the regulation of fatty acid synthesis by AMP and citrate.

Accepted Answer

AMP is a low-energy molecule that is pro...

Question 17

How are fatty acids larger than the 16 carbons formed?

Accepted Answer

A)   by elongation reactions catalyzed by enzymes on the endoplasmic reticulum
B)   by 1-carbon additions at the mitochondrial membrane
C)   by elongation reactions catalyzed by enzymes in the peroxisomes
D)   All of the above.
E)   None of the above.F) C) and E)
G) A) and B)

Question 18

Activation of acetyl CoA results in the production of ________________.

Accepted Answer

The answer of Activation of acetyl CoA results in the...

Question 19

Citrate serves as a signal for a high-energy state as it stimulates ________________.

Accepted Answer

acetyl CoA...

Question 20

The committed step of fatty acid synthesis is the formation of ________________.

Accepted Answer

The answer of The committed step of fatty acid synthesis...

Exam 28: Fatty Acid Synthesis

The committed step of fatty acid synthesis is the formation of ________________.

Correct AnswerverifiedShow Answer

Choose the correct answer from the list below. Not all of the answers will be used. -Fatty acid synthesis primarily takes place in the cellular location ________________.

Correct AnswerverifiedShow Answer

The coenzyme required for fatty acid synthesis is ________________.

Correct AnswerverifiedShow Answer

Where are the enzymes for fatty acid elongation and desaturation in eukaryotes?

Correct AnswerverifiedIn eukaryotes, the enzymes tha...View AnswerShow Answer

Acetyl carboxylaseis globally regulated by:

Correct AnswerverifiedShow Answer

Prostaglandins and thromboxanes are synthesized from ________________, a 20-carbon fatty acid.

Correct AnswerverifiedShow Answer

Choose the correct answer from the list below. Not all of the answers will be used. -The committed step in fatty acid synthesis is inactivated by the regulatory enzyme ________________.

Correct AnswerverifiedShow Answer

Describe the allosteric stimulatory effect of citrate on acetyl CoA carboxylase.

Correct AnswerverifiedThe inactive form of acetyl Co...View AnswerShow Answer

The carrier of an acyl chain through the synthetic protein complex is:

Correct AnswerverifiedShow Answer

Describe the regulation of fatty acid synthesis by AMP and citrate.

Correct AnswerverifiedAMP is a low-energy molecule that is pro...View AnswerShow Answer

Double bonds are introduced into fatty acids in the ________________ compartment of the cell.

Correct Answerverifiedendoplasmi...View AnswerShow Answer

Activation of acetyl CoA results in the production of ________________.

Correct AnswerverifiedShow Answer

How are fatty acids larger than the 16 carbons formed?

Correct AnswerverifiedShow Answer

The major product of mammalian fatty acid synthesis is ________________.

Correct Answerverifieda C16 fatt...View AnswerShow Answer

Citrate serves as a signal for a high-energy state as it stimulates ________________.

Correct Answerverifiedacetyl CoA...View AnswerShow Answer

The function of the enzyme acyl CoA synthetase is:

Correct AnswerverifiedShow Answer

Insulin leads to:

Correct AnswerverifiedShow Answer

Describe the chemistry for fatty acid synthesis at the stage when a 2-carbon molecule reacts with a 3-carbon molecule to give a 4-carbon molecule and a 1-carbon molecule..

Correct AnswerverifiedThis is the activation and con...View AnswerShow Answer

What enzyme catalyzes the committed step in fatty acid synthesis?

Correct AnswerverifiedShow Answer

Which compound inhibits the entry of fatty acyl CoA into the mitochondria as a function of the cell being in the high-energy state?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
In eukaryotes, the enzymes tha...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The inactive form of acetyl Co...
View Answer

Correct Answer
verified

Correct Answer
verified
AMP is a low-energy molecule that is pro...
View Answer

Correct Answer
verified
endoplasmi...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
a C16 fatt...
View Answer

Correct Answer
verified
acetyl CoA...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
This is the activation and con...
View Answer

Correct Answer
verified

Correct Answer
verified