Lipid Metabolism Quiz

Where does fatty acids biosynthesis occur?

• Mitochondria

• Cytoplasm

• Nucleus

• Endoplasmic reticulum

What is the primary precursor for fatty acid synthesis?

• NADPH

• AcetylCoA

• Glycerol

• Glucose

Which enzyme introduces unsaturation in fatty acids at C4, C5, C6, or C9?

• Acyl-CoA desaturases

• Fatty acid synthase

• Lipase

• AcetylCoA carboxylase

What is the main building block for the synthesis of triacylglycerols in tissues?

• Cholesterol

• Fatty acids

• Glycerol

• Glucose

Which hormone inhibits AcetylCoA carboxylase in fatty acid synthesis?

• Glucagon

• Insulin

• Epinephrine

• Cortisol

What is the primary source of fatty acids for oxidation?

• Adipocytes

• Liver

• Dietary intake

• Muscles

Where does the oxidation of fatty acids occur?

• Cytoplasm

• Mitochondria

• Endoplasmic reticulum

• Nucleus

Which enzyme is activated by epinephrine and glucagon in the regulation of lipolysis?

• Acyl-CoA desaturases

• Hormone-sensitive lipase

• Fatty acid synthase

• AcetylCoA carboxylase

What are the ketone bodies that include acetoacetate, β-hydroxybutyrate, and acetone?

• Acetate, Butyrate, Acetone

• Acetate, Acetone, Propionate

• Acetone, Propionate, Butyrate

• Acetoacetate, β-hydroxybutyrate, Acetone

What is the clinical significance of increased ketone bodies formation?

• Decreased blood pH

• Increased blood pH

• Improved oxygen binding by hemoglobin

• Enhanced glucose utilization