stages of mitosis and binary fission

prophase

-chromosomes condense and become visible
-nuclear membrane starts to break down
-centrioles move to opposite poles, spindle fibres begin to form

metaphase

chromosomes line up at equator of cell

anaphase

centromeres divide, spindle fibres shorten, pulling chromatids to opposite poles

telophase

-chromatids unravel into chromatin
-nuclear membrane reforms

cytokinesis

cytoplasm pinched off to form two individual cells

describe binary fission in bacterial cells

replication of circular DNA
replication of plasmids
division of the cytoplasm to form two daughter cells

what happens in S phase

DNA replicates in the nucleus

G2

cell grows, DNA checked for errors

G1

organelles replicate, cell grows