Lipid Metabolism Quiz
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What is the primary site for ketogenesis?
A. Liver mitochondria
B. Adipose tissue
C. Muscle cells
D. Pancreas
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
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
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
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 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
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
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
What is the primary site for ketogenesis?
A. Liver mitochondria
B. Adipose tissue
C. Muscle cells
D. Pancreas
Which ketone body is produced first in the process of ketogenesis?
A. Acetoacetate
B. β-hydroxybutyrate
C. Acetone
D. Oxaloacetate
Which of the following is NOT a ketone body?
A. Acetoacetate
B. β-hydroxybutyrate
C. Acetone
D. Glycerol
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