Lipid Metabolism Quiz

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Questions and Answers

What is the main location for fatty acid synthesis in mammals?

  • Liver (correct)
  • Muscle cells
  • Kidney cells
  • Brain cells

Where does the NADPH required for fatty acid synthesis come from?

  • Glycolysis
  • Krebs cycle
  • Electron transport chain
  • Pentose phosphate pathway (correct)

What is the main source of fatty acids and glycerol for metabolic fuels?

  • Triacylglycerols in the diet (correct)
  • Amino acids in the diet
  • Free fatty acids in cells
  • Stored glycogen in adipocytes

What is the primary reason for triacylglycerols being efficient energy stores?

<p>They are stored in an anhydrous form (B)</p> Signup and view all the answers

What provides the growing end of a hydrocarbon chain during fatty acid synthesis?

<p>Repetitive addition of two-carbon units (D)</p> Signup and view all the answers

What is the net ATP produced per glucose in the triose stage of glycolysis?

<p>2 ATP (B)</p> Signup and view all the answers

Which enzyme catalyzes the formation of acetyl CoA from pyruvate?

<p>Pyruvate dehydrogenase (D)</p> Signup and view all the answers

How many molecules of CO2 are released during the complete oxidation of one molecule of acetyl CoA in the citric acid cycle?

<p>2 CO2 (A)</p> Signup and view all the answers

What is the overall energy yield of the Krebs cycle in terms of ATP equivalents per molecule of acetyl CoA?

<p>2 ATP equivalents (C)</p> Signup and view all the answers

What is the primary function of the tricarboxylic acid transporter?

<p>Import of citrate into the mitochondria (A)</p> Signup and view all the answers

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