Medical Quiz

Lipid Metabolism Quiz


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What is the purpose of the shuttle mechanism in fatty acid transport into the mitochondrial matrix?

A. To convert fatty acids into acetyl CoA

B. To convert acyl CoA into acetyl CoA

C. To convert acetyl CoA into acyl CoA

D. To convert acyl CoA into ketone bodies


Which of the following is NOT a ketone body?

A. Acetoacetate

B. β-hydroxybutyrate

C. Acetone

D. Glycerol


What is the primary site for ketogenesis?

A. Liver mitochondria

B. Adipose tissue

C. Muscle cells

D. Pancreas


What is the function of micelles in lipid digestion and absorption?

A. To transport fatty acids and monoacylglycerols across the intestinal cell membranes

B. To emulsify triacylglycerol globules

C. To convert triacylglycerols into chylomicrons

D. To hydrolyze ester linkages in triacylglycerols


Which ketone body is produced first in the process of ketogenesis?

A. Acetoacetate

B. β-hydroxybutyrate

C. Acetone

D. Oxaloacetate


Which ketone body is produced first in the process of ketogenesis?

A. Acetoacetate

B. β-hydroxybutyrate

C. Acetone

D. Oxaloacetate


What is the major enzyme involved in the hydrolysis of triacylglycerols in the small intestine?

A. Gastric lipase

B. Pancreatic lipases

C. Hormone-sensitive lipase

D. Lipoprotein lipase


What is the main function of adipose tissue?

A. Storage location for energy

B. Insulation

C. Protection against physical shock

D. All of the above


What is the primary site for ketogenesis?

A. Liver mitochondria

B. Adipose tissue

C. Muscle cells

D. Pancreas


What is the primary source of stored energy in the human body?

A. Protein reserves

B. Glycogen reserves

C. Glucose reserves

D. Triacylglycerol reserves


How many ATP molecules are produced from the oxidation of stearic acid, an 18-carbon fatty acid?

A. 120 ATP

B. 122 ATP

C. 124 ATP

D. 126 ATP


Which of the following is NOT a health risk associated with excess fat located in the central abdominal area?

A. Hypertension

B. Insulin resistance

C. Diabetes

D. Arthritis


What is the purpose of the shuttle mechanism in fatty acid transport into the mitochondrial matrix?

A. To convert fatty acids into acetyl CoA

B. To convert acyl CoA into acetyl CoA

C. To convert acetyl CoA into acyl CoA

D. To convert acyl CoA into ketone bodies




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