Cell Division
& Mitosis
Cell division varies between
Prokaryotic and Eukaryotic Cells

Prokaryotic cells are single celled
organisms. Before the bacterium can
divide there must be two copies of its
DNA. This occurs by the DNA molecule
unzipping itself into two different strands,
which will form two separate
interdependent strands.

Once the DNA has replicated itself and the
cell has grown to an appropriate size, the
bacterium splits into two equal halves
through a process called binary fission.
 Draw
a picture of Binary Fission
Asexual Reproduction
 Eukaryotic
cells undergo nuclear
division ( asexual reproduction). The
life of a eukaryotic cell is traditionally
diagrammed as a cell cycle.
1. G1 Phase: rapid growth and
metabolic activity, protein
synthesis, cell spends most time
in this phase.
S
phase: DNA synthesis and
replication (copies),
chromosomes duplicate and
other cellular organelles.
 G2
Phase: centrioles replicate;
cell prepares for division
M
phase: MITOSIS-period of
nuclear division in which two
daughter nuclei are formed,
each containing a complete set
of chromosomes.
C
Phase: Cytokinesis-process
following mitosis or meiosis in
which the cells cytoplasm
divides and separates into new
cells.
Division of the Cytoplasm
Cells Alive Cell Cycle