Question 1

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

Accepted Answer

In eukaryotes, the enzymes tha

Question 2

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

Accepted Answer

endoplasmi

Question 3

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

Question 4

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 5

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

Question 6

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

Question 7

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

Accepted Answer

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

Question 8

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

Question 9

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. 
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.

Question 10

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

Accepted Answer

The inactive form of acetyl Co

Question 11

The coenzyme required for fatty acid synthesis is ________________.

Accepted Answer

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

Question 12

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) cytosol
F)glycolysis
G)acetyl CoA
H)β-hydroxybutyrate
I)acetyl CoA carboylase
J)AMP-dependent protein kinase
K)oxaloacetate
L)malic enzyme
M)citrate 
A) malonyl CoA 
B) three 
C) four 
D) C16-acyl ACP 
E) cytosol
F)glycolysis
G)acetyl CoA
H)β-hydroxybutyrate
I)acetyl CoA carboylase
J)AMP-dependent protein kinase
K)oxaloacetate
L)malic enzyme
M)citrate

Question 13

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 mitochondria 
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 mitochondria

Question 14

The major product of mammalian fatty acid synthesis is ________________.

Accepted Answer

a C16 fatt

Question 15

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. 
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.

Question 16

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) cytosol
F)glycolysis
G)acetyl CoA
H)β-hydroxybutyrate
I)acetyl CoA carboylase
J)AMP-dependent protein kinase
K)oxaloacetate
L)malic enzyme
M)citrate 
A) malonyl CoA 
B) three 
C) four 
D) C16-acyl ACP 
E) cytosol
F)glycolysis
G)acetyl CoA
H)β-hydroxybutyrate
I)acetyl CoA carboylase
J)AMP-dependent protein kinase
K)oxaloacetate
L)malic enzyme
M)citrate

Question 17

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

Accepted Answer

AMP is a low-energy molecule that is pro

Question 18

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

Accepted Answer

acetyl CoA

Question 19

Activation of acetyl CoA results in the production of ________________.

Accepted Answer

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

Question 20

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

Accepted Answer

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

Exam 28: Fatty Acid Synthesis

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

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

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

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..

Acetyl carboxylaseis globally regulated by:

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

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

What enzyme catalyzes the committed step in fatty acid synthesis?

How are fatty acids larger than the 16 carbons formed?

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

The coenzyme required for fatty acid synthesis is ________________.

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 ________________.

Insulin leads to:

The major product of mammalian fatty acid synthesis is ________________.

The function of the enzyme acyl CoA synthetase is:

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 ________________.

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

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

Activation of acetyl CoA results in the production of ________________.

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

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

Glycolysis

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

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