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 finish
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
