Question

? What is the microtubule organizing center?

? What is a centrosome?

? What is a centromere?

? What is a kinetochore?

? What is microtubulin?

? What is the mitotic spindle?

? What is cytokinesis?

? Which cytoskeletal proteins are important constituents of the contractile structures that form the cleavage furrows in animal cell cytokinesis?

? How does plant cytokinesis differ from animal cell cytokinesis?

? Know the role of MPF (mitosis promoting factor) in the cell cycle and early experiments with frog oocytes

? How is the cell cycle controlled? What are the regulatory molecules? How is MPF turned on & turned off? What is cyclin and cycling dependent kinase (Cdk)?

? Know the four cell cycle checkpoints

Answer 1

A) Microtubule organizing center is a structure found in eukaryotic cells from where microtubules emerge.

B) centrosome is an organelle near the nucleus of an animal cell that contains centrioles and from which spindle fibers develop in cell division.

C) Centromere is a region of a chromosome to which microtubules of the spindle fiber attach via kinetochore during cell division.

D) Kinetochore is a complex of proteins associated with the centromere of the chromosome during cell division to which microtubules of the spindle attach.