Cytoskeleton ​
Tags
Cegep1
Biology
Word count
119 words
Reading time
1 minute
Dynamic network of protein fibres in the cytoplasm
Function: maintains cell shape
Types ​
Microtubule ​
Hollow rod constructed from globular protein tubulin
Thickest
Functions:
- Organelle movement
- Chromosome movement
- Cell movement by cilia and flagella
Microfilament ​
Solid rod constructed from actin
Thinnest
Functions:
- Motility
- Muscle contraction
- Pseudopodia formation during phagocytosis
- Cell division
- Cytoplasmic streaming
[!abstract] Motility
Ability of a cell to move spontaneously and actively
[!abstract] Cytoplasmic streaming
Cycle of a stream of cytoplasm in a cell
Intermediate filament ​
Diverse class of proteins, including keratin
Medium-size
Functions:
- Fixes organelle location
- Maintains the shape of nucleus as part of the nuclear lamina
Ajitani Hifumi