CHE 4342 Chapter 20 Parts 1, 2, 3A, 3B Questions With Complete Solutions

CHE 4342 Chapter 20 Parts 1, 2, 3A, 3B Questions With
Complete Solutions

About how many different fatty acids are known to naturally
occur? Correct Answers 40

Ackee fruit releases a poison, hypoglycin, that does what?
Correct Answers Inhibits Acyl-CoA dehydrogenase SCAD and
MCAD

Acyl CoA Dehydrogenase is a family of 3 matrix enzymes, each
named what? Correct Answers SCAD, MCAD, VLCAD

Acyl-CoA Synthetase (Thiokinase) is what EC classification?
Correct Answers EC6 Ligase

An MCAD deficiency causes what? Correct Answers 10% of
Sudden Infant Death Syndrome

Are nutritional ketosis and diabetic ketoacidosis the same thing?
Correct Answers No

Beta Ketothiolase (KT) forms a new thioester in which step of
beta oxidation? What is important about this rxn? Correct
Answers Step 4. This step is highly exergonic and drives the
other 3 steps

Compare energy obtained by oxidizing fatty acids vs.
carbohydrates? Correct Answers ~12000 vs. ~3000

, Composition of a triacylglycerol (TAG) (Triglyceride)? Correct
Answers Glycerol backbone, 3 fatty acids

Double bonds on fatty acids are most commonly what
conformation? Correct Answers Cis

Electrons are passed from Acyl-CoA dehydrogenase to what?
Correct Answers Electron transfer flavoprotein ETF

2 e-

Electrons are passed from electron transfer flavoprotein (ETF) to
what? Correct Answers ETF:Ubiquinone oxidoreductase
(ETF:QO)

2e-

Electrons from ETF: Ubiquinone oxidoreductase are passed to
what? Correct Answers Electron Transport Chain (Q)

2e-

Enoyl-CoA Hydratase (EH) are also known as what? Which rxn
of beta oxidation uses this enzyme? Correct Answers Lyase,
Crotonase
Rxn 2, hydration of CH=CH alpha beta bond

Enzymes 2,3 and 4 of the VLCAD system make a complex
called what? Correct Answers Mitochondrial Trifunctional
Protein (MTP)