Cytoskeleton and cell movement

1. What is a cytoskeleton?
What are its main constituents
in animal cells?
2. Of which substance are
microtubules made? In which
structures and cellular
processes do microtubules
participate?
3. Of which substance are
microfilaments made? What
are the properties of these
elements that give motility to
cells?
4. What are cell movements?
How are these movements
created?
5. What are cilia and flagella?
How do these structures
acquire movement? What are
some examples of ciliated and
flagellated cells in humans?
6. How does the amoeboid
movement occur? What are
examples of beings and cells
that use such movements for
locomotion?
7. What are some examples of
movement created by the
contraction of sarcomeres of
the muscle cells?
8. What is cyclosis?