Exam 21: Lipid Metabolism

The yield of ATP from oxidation of an unsaturated fatty acid has what relationship to the yield from the oxidation of a saturated fatty acid with the same number of carbon atoms?

Where in the cell does β -oxidation occur?

The enzyme activity catalyzing the reaction shown is best termed a

Approximately how many ATP molecules are netted from the complete oxidation of stearic acid (C − 18)?

​ _____ is a condition in which arteries are blocked to a greater or lesser extent by the deposition of cholesterol plaques.

Cholesterol can be made in the body; however, some must still be eaten in the diet, since we cannot make enough to meet the demand.

How many NAD⁺ are reduced in the degradation of palmitoyl-CoA to form eight molecules of acetyl-CoA?

The committed step in cholesterol biosynthesis is catalyzed by

The cis double bonds of naturally-occurring fatty acids react well with the hydratase enzyme.

Which of the following reactions is catalyzed by carnitine acyltransferase?

The first committed precursor in the pathway for the synthesis of cholesterol is:

Cholesterol is a precursor of all of the following except

The use of cyclic AMP to mobilize fatty acids from adipose tissue is analogous to cyclic AMPs role in mobilization of sugars from glycogen in the liver.

Which of the following is not a product of the activation of fatty acids?

​ Which of the following enzymes is involved in the esterification of a fatty acid for its activation?

Palmitic acid, with 16 carbons, requires 8 cycles of β -oxidation to produce 8 acetyl-CoA.

The primary function of biotin in metabolism is:

Explain why the yield of adenosine triphosphate (ATP) from the oxidation of lipids is higher than that from carbohydrates.

Which of the following statements below about the activation of fatty acids is false ?

The reactions involved in β -oxidation of fatty acids include the following: 1) Cleavage of acetyl-CoA from the fatty acid. 2) Hydration of a double bond. 3) Formation of a C − C double bond. 4) Oxidation of an alcohol. The correct order of these reactions is: