| A | B |
|---|
| Cytoskeleton | Polymer network of filamentous, proteinaceous structures |
| Cytoskeleton Functions | Lend architecture and support, Provide framework, Provide machinery for movement of cell, Play important role in cell division |
| Cytoskeletal Elements are | Dynamic |
| Cytoskeletal Elements are capable of | collapse and reorganization |
| Actin Polymerization | Nucleation phase, Elongation phase, Steady state phase |
| In Microfiliament Growth Rate of addition of G-actin-ATP depends on | concentration of free monomers |
| Treadmilling | Powered by hydrolysis of ATP |
| Microfilament Cross-linking proteins | Fimbrin, α-actinin, Spectrin, filamin |
| Adaptor Proteins | Anchor filaments to cell membrane |
| Myosin Motor Proteins | All myosins convert ATP hydrolysis into work |
| Most myosins move toward | plus (+) end of microfiliament |
| Myosin VI moves toward | minus (-) end of microfiliament |
| Sarcomere | Unit of Contractility |
| I band | thin filaments |
| A band | thick filaments |
| Muscles move by | shortening |
