Cytoskeleton Flashcards
1
Q
What is the cytoskeleton?
A
a network of fibres in the cytoplasm of a eukaryotic cell
2
Q
What are the three components of the cytoskeleton?
A
- Microfilaments
- Microtubles
- Intermediate fibres
3
Q
What are microfilaments made from?
A
Actin
4
Q
What type of molecule is actin?
A
Protein
5
Q
What are the functions of microfilaments?
A
- maintain cell shape
- move cells via contraction
- cell contraction in cytokinesis
6
Q
What are microtubles made from?
A
Tubulin
7
Q
What sort of molecule is tubulin?
A
Globular protein
8
Q
What are the functions of microtubles?
A
- determines shape of cell
- maintains cell shape
- acts as track for movement of organelles around the cell
- move cells via flagella/cilia
- form spindle fibres which move chromosomes during cell division
9
Q
What are the functions of intermediate fibres?
A
- gives mechanical strength to cells
- helps maintain cell integrity
