Lipoprotein Metabolism: Cholesterol and Triglycerides Functions
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Questions and Answers

Which lipoprotein is produced by the liver to send triglycerides to cells for energy during fasting?

  • HDL
  • VLDL (correct)
  • Chylomicrons
  • LDL

What is the main function of HDL in the context of lipoprotein metabolism?

  • Removes excess cholesterol from tissues (correct)
  • Main source of immediate energy
  • Contains dietary fats
  • Component of cell membranes

Which lipoprotein is considered the 'bad guy' due to its cholesterol-rich content and association with atherosclerosis?

  • LDL (correct)
  • VLDL
  • Chylomicrons
  • HDL

What is the main form of dietary and endogenous fat in the body?

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

How are chylomicrons formed?

<p>Bile salts break down dietary fats in intestines (A)</p> Signup and view all the answers

What is the daily synthesis rate of cholesterol in humans?

<p>$700$ mg (B)</p> Signup and view all the answers

How do chylomicrons primarily deliver fats to the body?

<p>By traveling through lymph to reach various tissues (C)</p> Signup and view all the answers

What is the role of lipoprotein lipase in the body's fat metabolism?

<p>Breaking down triglycerides in chylomicrons into glycerol and free fatty acids (D)</p> Signup and view all the answers

How are remnants of chylomicrons cleared from the body?

<p>By being taken up by remnant receptors in the liver (D)</p> Signup and view all the answers

What happens to VLDL remnants that are not removed by the liver?

<p>They circulate and become plaque (B)</p> Signup and view all the answers

What is the role of LDL receptors in the body's cholesterol regulation?

<p>They facilitate the uptake of LDL by all cells (D)</p> Signup and view all the answers

How does ApoA1 protein contribute to cholesterol removal by HDLs?

<p>It pulls out cholesterol from cell macrophages to form HDLs (D)</p> Signup and view all the answers

What characterizes lipoprotein (a) or Lp(a) as an inherited risk factor for cardiovascular disease?

<p>It has genetic determinants and poses a risk for heart disease and stroke (C)</p> Signup and view all the answers

What distinguishes primary dyslipidemia from secondary dyslipidemia?

<p>Primary dyslipidemia is caused by genetic factors while secondary dyslipidemia is due to diet and other factors (B)</p> Signup and view all the answers

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