Cystoskelenton- Chp 17

Question 1

Cytoskeleton- Purpose? Function?

Answer 1

• the framework of eukaryotic and animal cells that give the cell same and enables intracellular movement and communication
• made up of actin filaments, microtubules, and intermediate filaments.

Question 1

have an inherent polarity, with a plus
end that GROWS MORE QUICKLY than the minus end

Answer 1

Actin Filaments
Microtubles

Question 2

Plectin

Answer 2

protein that links microtubules to actin

Question 3

Desosomes

Answer 3

Where intermediate filaments are inserted in plasma membranes
Function: indirectly connect filaments of neighboring cell
Goal: Protect cells from mechanical stress

Question 4

Progeria Disease

Answer 4

-Causes premature aging
- mutation in intermediate filaments disrupts lamin in nuclear lamina
- think of movie paa