5-L1

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Questions and Answers

What is the major dietary and storage lipid in the body?

  • Phospholipids
  • Cholesterol esters
  • Eicosanoids
  • Triacylglycerols (correct)

Which hormone promotes the storage of triacylglycerols in adipose tissue?

  • Adrenaline
  • Cortisol
  • Insulin (correct)
  • Glucagon

What is the main role of triacylglycerols in the body?

  • Fuel storage (correct)
  • Local mediators
  • Component of membranes
  • Insulation

Which of the following hormones reduces the storage of triacylglycerols?

<p>Glucagon (C)</p> Signup and view all the answers

Apart from cholesterol, what other lipid is involved in steroid hormone synthesis?

<p>Cholesterol esters (A)</p> Signup and view all the answers

Which enzyme is responsible for hydrolyzing triacylglycerols in the small intestine?

<p>Pancreatic lipase (B)</p> Signup and view all the answers

What type of fatty acids are the most common in the body?

<p>Saturated (C)</p> Signup and view all the answers

Which hormones activate hormone-sensitive lipase for hydrolyzing triacylglycerols in stress situations?

<p>Glucagon (C)</p> Signup and view all the answers

Why can't red blood cells oxidize fatty acids?

<p>Absence of mitochondria (B)</p> Signup and view all the answers

Which vitamin is involved in the complex molecule Coenzyme A?

<p>Vitamin B5 (C)</p> Signup and view all the answers

What inhibits the transport of activated fatty acids into mitochondria?

<p>Malonyl-CoA (C)</p> Signup and view all the answers

What is the fate of most of the dietary carbohydrate and protein consumed in excess?

<p>Esterification to triacylglycerols for storage in adipose tissue (A)</p> Signup and view all the answers

What inhibits the enzyme responsible for synthesizing fatty acids from acetyl-CoA?

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

"Beta-oxidation" refers to the oxidation of:

<p>$\text{Fatty acids}$ (C)</p> Signup and view all the answers

"Esterification" refers to the process of converting:

<p>$\text{Excessive carbohydrate and protein}$ to triacylglycerols for storage (D)</p> Signup and view all the answers

Why does fatty acid oxidation not occur in cells of the central nervous system?

<p>Fatty acids do not readily cross the Blood-Brain Barrier (C)</p> Signup and view all the answers

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