Exam 22: Fatty Acid Catabolism

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In ketone body biosynthesis,the HMG-CoA lyase reaction is mechanistically the reverse of the first half of the reaction catalyzed by a particular TCA enzyme.Which of the following TCA enzymes does it resemble?

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Question 1

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How do ketone body carbons enter the major metabolic pathways of the cells?

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Question 2

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Which of the following tissues stores triacylglycerols?

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Question 3

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During ?-oxidation of certain unsaturated fatty acids,cis-?³-fatty acyl-CoAs are formed that must be converted to trans-?²-fatty acyl-CoAs.Which of the following enzymes converts them to trans-?²-fatty acyl-CoAs?

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Question 4

Which of the following steps is NOT a part of the sequence of events for activation of the release of fatty acids from adipose cells?

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Question 5

Which of the following are the 3 most common ketone bodies?

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Question 6

Which of the following hormones does NOT cause fatty acid mobilization in adipose cells?

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Question 7

How many NAD⁺ are reduced in the b-oxidation of stearoyl-CoA to form 9 molecules of acetyl-CoA?

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Question 8

Which of the following cellular locations is the site for where fatty acids are condensed with coenzyme A to form acyl-CoA for β-oxidation?

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Question 9

Which of the following classes of enzymes does enoyl-CoA hydratase belong to?

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Question 10

Which of the following is NOT involved with the transport of fatty acyl groups from the cytosol to the matrix?

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Question 11

How many NADH are generated from the complete oxidation of palmitoyl-CoA to CO₂?

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Question 12

Which of the following sequences of metabolic reactions is analogous to the first 3 reactions of ?-oxidation of saturated fatty acids?

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Question 13

Which of the following lipid components are produced in the duodenum by the enzyme pancreatic lipase during lipid digestion?

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Question 14

Which of the following series correctly describes the conversion of a fatty acid to CO₂?

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Question 15

The first oxidation in the β-oxidation of saturated fatty acids is catalyzed by acyl-CoA dehydrogenase.Which of the following chemical conversions does it catalyze?

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Question 16

Which of the following TCA cycle intermediates is propionyl-CoA ultimately converted to?

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Question 17

Where are ketone bodies synthesized?

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Question 18

How many times must the ?-oxidation cycle be repeated for the complete oxidation of a saturated fatty acid with 16 carbons?

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Question 19

Which of the following is NOT a use for acetyl-CoA,a product of b-oxidation?

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Question 20

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Exam 22: Fatty Acid Catabolism

In ketone body biosynthesis,the HMG-CoA lyase reaction is mechanistically the reverse of the first half of the reaction catalyzed by a particular TCA enzyme.Which of the following TCA enzymes does it resemble?

How do ketone body carbons enter the major metabolic pathways of the cells?

Which of the following tissues stores triacylglycerols?

During ?-oxidation of certain unsaturated fatty acids,cis-?³-fatty acyl-CoAs are formed that must be converted to trans-?²-fatty acyl-CoAs.Which of the following enzymes converts them to trans-?²-fatty acyl-CoAs?

Which of the following steps is NOT a part of the sequence of events for activation of the release of fatty acids from adipose cells?

Which of the following are the 3 most common ketone bodies?

Which of the following hormones does NOT cause fatty acid mobilization in adipose cells?

How many NAD⁺ are reduced in the b-oxidation of stearoyl-CoA to form 9 molecules of acetyl-CoA?

Which of the following cellular locations is the site for where fatty acids are condensed with coenzyme A to form acyl-CoA for β-oxidation?

Which of the following classes of enzymes does enoyl-CoA hydratase belong to?

Which of the following is NOT involved with the transport of fatty acyl groups from the cytosol to the matrix?

How many NADH are generated from the complete oxidation of palmitoyl-CoA to CO₂?

Which of the following sequences of metabolic reactions is analogous to the first 3 reactions of ?-oxidation of saturated fatty acids?

Which of the following lipid components are produced in the duodenum by the enzyme pancreatic lipase during lipid digestion?

Which of the following series correctly describes the conversion of a fatty acid to CO₂?

The first oxidation in the β-oxidation of saturated fatty acids is catalyzed by acyl-CoA dehydrogenase.Which of the following chemical conversions does it catalyze?

Which of the following TCA cycle intermediates is propionyl-CoA ultimately converted to?

Where are ketone bodies synthesized?

How many times must the ?-oxidation cycle be repeated for the complete oxidation of a saturated fatty acid with 16 carbons?

Which of the following is NOT a use for acetyl-CoA,a product of b-oxidation?

The Facts of Life: Chemistry Is the Logic of Biological Phenomena

Water: the Medium of Life

Thermodynamics of Biological Systems

Amino Acids

Proteins: Their Primary Structure and Biological Functions

Proteins: Secondary, tertiary, and Quaternary Structure

Carbohydrates and the Glycoconjugates of Cell Surfaces

Lipids

Lipid Biosynthesis

Membranes and Membrane Transport

The Reception and Transmission of Extracellular Information

Enzymes Kinetics and Specificity

Mechanisms of Enzyme Action

Enzyme Regulation

Molecular Motors

Nutrition and the Organization of Metabolism

Glycolysis

The Tricarboxylic Acid Cycle

Electron Transport and Oxidative Phosphorylation

Photosynthesis

Gluconeogenesis, glycogen Metabolism, and the Pentose Phosphate Pathway

Nitrogen Acquisition and Amino Acid Metabolism

Nucleotides and Nucleic Acids

Structure of Nucleic Acids

Synthesis and Degradation of Nucleotides

Recombinant Dna: Cloning and Creation of Chimeric Genes

DNA Metabolism: Replication, recombination, and Repair

Transcription and the Regulation of Gene Expression

Protein Synthesis

Post-Transcriptional Regulation of Gene Expression

Completing the Protein Life Cycle: Folding, processing, and Degradation

Metabolic Integration and Organ Specialization

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