Beta-Oxidation REVIEW

Where are the enzymes for β-oxidation present?

• Nucleus

• Cytosol

• Mitochondria

• Golgi apparatus

Which enzyme is responsible for the initial step of beta oxidation?

• Acyl-CoA dehydrogenase

• Carnitine acyltransferase I

• Fatty acid synthase

• Acyl-CoA synthetase

How many carbons are removed in each cycle of beta oxidation?

• 1

• 2

• 3

• 4

What is the primary product of beta oxidation?

• Acetyl-CoA

• Malonyl-CoA

• Citrate

• Propionyl CoA

Which of the following is not a product of beta oxidation?

• NADH

• FADH2

• ATP

• CO2

Which enzyme catalyzes the final step of beta oxidation, producing acetyl-CoA and a fatty acyl-CoA shortened by two carbons?

• Thiolase

• Acyl-CoA dehydrogenase

• Carnitine acyltransferase II

• Acetyl-CoA carboxylase

Which carbon atoms on a fatty acid molecule have the hydrogen atoms removed from them in the first step (acyl-CoA dehydrogenase) of beta oxidation?

• The alpha and beta carbon atoms

• The first two carbon atoms

• The last two carbon atoms

• The carbon atoms with a double bond.

How many molecules of acetyl-CoA will be created from a 14 carbon fatty acid?

• 7 molecules of acetyl-CoA

• 6 molecules of acetyl-CoA

• 8 molecules of acetyl-CoA

• 14 molecules of acetyl-CoA

During beta-oxidation, what is the first step that occurs after the fatty acid is activated to form acyl-CoA?

• Oxidation

• Hydration

• Dehydration

• Thiolysis

What is the role of carnitine in beta-oxidation?

• It transfers fatty acids into the mitochondria

• It transfers acetyl-CoA into the mitochondria

• It catalyzes the cleavage of fatty acids

• It inhibits the activity of beta-oxidation enzymes