EASY MULTIPLE CHOICE!!! Quiz: Final Exam 12/14/2016 Question 36 Which of the fol

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EASY MULTIPLE CHOICE!!!

Quiz: Final Exam 12/14/2016 Question 36 Which of the following would you find in the ECM (extracellular matrix)? Please select all that apply. proteoglycans nucleic acids polysaccharides fibronectin structural proteins kinesin cyclins microfilaments Question 37 This type of junction is important in preventing molecules from crossing the blood-brain barrier. adherens hemidesmosomes gap junctions desmosomes gh Question 38 Cancer cells over produce so that they can metastasize Please select all that apply integrins https: Whicdenver.instructure.com/courses1341766 uizzes79359Mtake 2 pts 2 pts 2 pts 5/26

Explanation / Answer

ans-36-Structural proteins-fibrous Structural proteins collagens and elastins

ECM contains proteoglycans molecules which is protein polysaccharide complex

adhesive glycoproteins to attach cells to matrix-fibronectin

microfilaments of cytoskeleton

ans-37-Tight junction-The blood brain barrier formed by endothelial cell and tight junction between the endithelial cell are responsible for the barrier function .tight junction form virtually impermeable membrane barriet to fluid.

ans-38-Intergrins- iinvolved in cancer metastasis.Integrins are transmembrane receptors that mediate cell adhesion to neighboring cells .

Fibronectin is glycoproteins which binds to the integrin .Fibronectin has been implicated in carcinoma development,gibronectin play a key role in cell growth,adhesion,differentiation and migration.

cadherin-is a transmembrane protein play a key role in cell adhesion.

ans-39-adherin junction and Desmosomes holds cell together and formed by transmembrane protein from the cadherin family,

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