Lipid Quiz

Which of the following is the primary cellular location for fatty acid synthesis?

• Mitochondria
• Lysosome
• Endoplasmic reticulum
• Cytoplasm

Glycerol-3-phosphate, a precursor for triglyceride synthesis, can be derived from:

• Amino acids
• Ketone bodies
• Glucose via glycolysis
• Fatty acids directly

Under which of the following metabolic conditions is the production of ketone bodies most favored?

• Prolonged fasting
• High levels of malonyl-CoA
• Insulin-stimulated glucose uptake
• High carbohydrate intake

Which of the following is NOT a ketone body?

• Beta-hydroxybutyrate
• Malonyl-CoA
• Acetone
• Acetoacetate

The enzyme complex primarily responsible for fatty acid synthesis is:

• HMG-CoA reductase
• Carnitine acyltransferase
• Fatty acid synthase
• Lipoprotein lipase

Which of the following is the initial substrate for fatty acid synthesis?

• Palmitate
• Citrate
• Acetyl-CoA
• Malonyl-CoA

The synthesis of triglycerides involves the esterification of fatty acids to which molecule?

• Sphingosine
• Glycerol
• Cholesterol
• Carnitine

In which cellular location does ketogenesis primarily occur?

• Mitochondrial matrix
• Peroxisome
• Endoplasmic reticulum
• Cytoplasm

Fatty acid synthesis and ketogenesis are both influenced by the availability of which molecule?

• Pyruvate
• Oxaloacetate
• Acetyl-CoA
• Glucose-6-phosphate

Which of the following is a key difference between fatty acid synthesis and ketogenesis?

• One occurs in the cytoplasm, the other in the mitochondria.
• One is anabolic, the other is catabolic.
• One requires ATP, the other produces ATP.
• All true