Proteoglycans
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Questions and Answers

Which molecule is covalently bound to the core protein of proteoglycans?

  • Keratan sulfate
  • Chondroitin sulfate
  • GAGs (correct)
  • Collagen

What is the main proteoglycan found in cartilage?

  • AGGRECAN (correct)
  • Chondroitin sulfate
  • Collagen
  • Keratan sulfate

What type of gel does AGGRECAN and type II collagen form?

  • Viscous gel
  • Solid gel
  • Compression-resistant gel (correct)
  • Elastic gel

Which molecule is susceptible to damage due to exposure to free radicals?

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

What is the consequence of the reduction of proteoglycan aggregates over a lifetime?

<p>Wrinkling of the skin (D)</p> Signup and view all the answers

Which molecule forms structures called proteoglycan aggregates?

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

Which molecule is responsible for the susceptibility of proteoglycan aggregates to damage?

<p>Exposure to free radicals (B)</p> Signup and view all the answers

What is the consequence of the reduction of proteoglycan aggregates over a lifetime?

<p>Formation of wrinkles (D)</p> Signup and view all the answers

Which molecule forms a large number of monomers attached to hyaluronan?

<p>Glycosaminoglycan (GAG) (A)</p> Signup and view all the answers

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