Question

What are the three cytoskeletal elements, how are they different from each other, what cellular processes do they facilitate and how (how does this relate to signaling, cell cycle, migration, cell shape)?

Answer 1

3 cytoskeleton elements are -

• Micrifilaments(Actin)
• Intermediate filaments
• Microtubules

Differences between these elements are-

Microfilaments(actun)	Intermediate filaments	Microtubules
7 nm in diameter	10 nm in diameter	24 nm in diameter
Provides shape to cell Cell movement	Provides actual stability	Organeller movement
Make the cell dynamic	make the cell static	Make the cell dynamic

Present just beneath the plasma membrane

Run throughout the cell forming a web-like structure in which most of organelles are suspended.

Run longitudinally in the cell and present beneath eukaryotic cilia and flagellum

Functions-

  Function of micrtubules-

1.) Vesicular transport and organellar movement

2.) Movement of cilia and flagella.

3.) Spindle formation

4.) Opening and closing of stomata

5.) Microtubules decide the activity of Cellulose Synthase.