Page 158 - Science Course 3 (Book 1)

Mo4-L4b: What is the Mitotic Phase?

Let’s Begin Phases of the Cell Cycle
Phases of the Cell Cycle

The Mitotic phase Phase Stage Description
During mitosis, the contents of the nucleus divide, G1 grow and cellular functions;
organelle replication
forming two identical nuclei.
growth and chromosome
S replication organelle
Interphase
replication
growth and cellular
G2 functions; organelle
replication
Mitosis division of nucleus
Mitotic
Phase
Cytokinesis division of cytoplasm
Stages of

Mitosis

In cytokinesis, the cytoplasm divides and forms two
new daughter cells.

Telophase & Cytokinesis Results of Cell Division
The cell cycle is important for reproduction in some
organisms, growth in multicellular organisms,
replacement of worn out or damaged cells, and
repair of damaged tissues.

• In some unicellular organisms, cell division is a
form of reproduction.
• Cell division allows multicellular organisms to grow
and develop from one cell.
Key Concept

What is the Mitotic Phase?
What happens during the mitosis cell cycle?

Parent Nucleus Cytoplasm Two daughter
cell Divides divides cell

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