Fatty Acid Metabolism Quiz

Which enzyme catalyzes the rate-limiting step in fatty acid synthesis?

• Carnitine acyltransferase I

• Acetyl-CoA carboxylase

• Hormone-sensitive lipase

• HMG-CoA reductase

Which of the following lipoproteins is primarily responsible for transporting triglycerides from the liver to peripheral tissues?

• HDL

• Chylomicrons

• VLDL

• LDL

Beta-oxidation of fatty acids occurs in which cellular compartment?

• Cytosol

• Mitochondrial matrix

• Endoplasmic reticulum

• Nucleus

Which of the following is a product of β-oxidation of palmitic acid (C16)?

• 6 Acetyl-CoA

• 8 Acetyl-CoA

• 9 Acetyl-CoA

• 7 Acetyl-CoA

During fasting, the liver produces ketone bodies from:

• Glucose

• Glycerol

• Amino acids

• Acetyl-CoA

Which of the following enzymes is inhibited by malonyl-CoA?

• Acetyl-CoA carboxylase

• Carnitine acyltransferase I

• Lipoprotein lipase

• HMG-CoA lyase

HMG-CoA reductase is the rate-limiting enzyme in the synthesis of:

• Fatty acids

• Ketone bodies

• Cholesterol

• Phospholipids

What is the primary role of HDL in lipid metabolism?

• Transport dietary lipids from intestine to liver

• Deliver cholesterol to peripheral tissues

• Remove excess cholesterol from tissues to the liver

• Deliver triglycerides to muscle

Which hormone stimulates lipolysis in adipose tissue?

• Insulin

• Glucagon

• Leptin

• Cortisol

Deficiency of carnitine leads to impairment of:

• Glycolysis

• β-oxidation of fatty acids

• Cholesterol synthesis

• Protein synthesis