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Transcript 
10-2 Cell Division
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Glue Foldable First
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10-2 Cell Division
Vocabulary
Centriole
Centromere
Spindle Fibers
Nuclear Envelope
Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
Daughter cell
Parent cell
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10-2 Cell Division
Cell Cycle
• Interphase
• G1
• S
• G2
• G0
Foldable (Cell Cycle)
Mitosis
• Parent Cell
• Daughter cell
• Centriol
• Centromere
• Spindle Fibers
• Nuclear Envelope
Foldable (Mitosis)
•
•
•
•
•
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
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10-2 Cell Division
The Cell Cycle
Cell Cycle
The cell cycle is the series of events that cells go
through as they grow and divide. Made of 3 steps:
Interphase, Mitosis, & Cytokinesis.
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10-2 Cell Division
The Cell Cycle
During the cell cycle:
• a cell grows
• prepares for division
• divides to form two daughter cells, each
of which begins the cycle again
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10-2 Cell Division
Interphase is the period of growth that occurs
between cell divisions. Contains 3 steps: G1, S, &
G2.
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10-2 Cell Division
The Cell Cycle
The cell cycle consists of four phases:
• G1 (Growth)
• S Phase (DNA synthesis)
• G2 (Growth)
• M Phase (Mitosis)
• G0 (Dormant phase)
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10-2 Cell Division
Events of the Cell Cycle
Events of the Cell Cycle
During G1, the cell
• increases in size
• synthesizes new proteins and organelles
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10-2 Cell Division
Events of the Cell Cycle
During the S phase,
• chromosomes are replicated
• DNA synthesis takes place
Once a cell enters the S phase, it
usually completes the rest of the
cell cycle.
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10-2 Cell Division
Events of the Cell Cycle
The G2 Phase (Second Gap Phase)
• organelles and molecules required for cell
division are produced
• Once G2 is complete, the cell is ready to start the
M phase—Mitosis
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10-2 Cell Division
Events of the Cell Cycle
Cell Cycle
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10-2 Cell Division
Cell Division
Mitosis - a type of cell division that results in two identical daughter. 4 stages:
Prophase, Metaphase, Anaphase, & Telophase
Parent cell - A cell that is the source of other cells, as a cell that divides to produce two or
more daughter cells
Daughter cell - Either of the two cells formed when a cell undergoes cell division by mitosis.
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10-2 Cell Division
Centrioles - a cylindrical cell structure found in most eukaryotic cells.
Spindle Fibers - Spindle fibers form a protein structure that divides the
genetic material in a cell
Nuclear Envelope - The nuclear envelope
surrounds the nucleus with a double membrane
with multiple pores.
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10-2 Cell Division
Mitosis
Mitosis
Biologists divide the events of mitosis
into four phases:
• Prophase
• Metaphase
• Anaphase
• Telophase
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10-2 Cell Division
Mitosis
Mitosis
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10-2 Cell Division
Mitosis
Section 10-2
Spindle
forming
Prophase
Prophase
Chromosomes
(paired
chromatids)
Centromere
Click to Continue
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10-2 Cell Division
Mitosis
Spindle
forming
Prophase
Chromatin condenses
into chromosomes.
The centrioles separate
and take up positions on
opposite sides of the
nucleus. Spindle fibers
form.
Centromere
Nuclear Envelope
dissolves
Copyright Pearson Prentice Hall
Chromosomes
(paired
chromatids)
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10-2 Cell Division
Mitosis
Metaphase
Centriole
Spindle
Centriole
Metaphase
Click to Continue
Copyright Pearson Prentice Hall
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10-2 Cell Division
Mitosis
Centriole
Metaphase
The chromosomes line
up across the center of
the cell.
Spindle fibers attach to
chromosomes.
Spindle
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10-2 Cell Division
Mitosis
Anaphase
Individual
chromosomes
Anaphase
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10-2 Cell Division
Mitosis
Anaphase
Individual
chromosomes
The sister chromatids
separate into individual
chromosomes.
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10-2 Cell Division
Mitosis
Telophase
Nuclear
envelope
reforming
Telophase
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10-2 Cell Division
Mitosis
Telophase
Chromosomes gather
at opposite ends of the
cell and lose their
distinct shape.
Nuclear envelopes
form.
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10-2 Cell Division
PROPHASE
METAPHASE
ANAPHASE
TELOPHASE
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10-2 Cell Division
Cytokinesis
Cytokinesis
Cytokinesis
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10-2 Cell Division
Cytokinesis
Cytokenisis – When the
two daughter cells
separate after mitosis
During cytokinesis, the
cytoplasm pinches in
half in an animal cell.
Each daughter cell has
an identical set of
chromosomes.
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10-2 Cell Division
Cytokinesis in Plants
In plants, a structure known as the cell plate forms
midway between the divided nuclei. The cell plate
gradually develops into a cell wall.
Cell wall
Cell plate
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10-2
The series of events that cells go through as
they grow and divide is called
a. the cell cycle.
b. mitosis.
c. interphase.
d. cytokinesis.
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Copyright Pearson Prentice Hall
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Copyright Pearson Prentice Hall
mitosis rap
Mitosis Song
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Copyright Pearson Prentice Hall
10-2
The phase of mitosis during which the
chromosomes line up across the center of the
cell is
a. prophase.
b. metaphase.
c. anaphase.
d. telophase.
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10-2
Cytokinesis usually occurs
a. at the same time as telophase.
b. after telophase.
c. during interphase.
d. during anaphase
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Copyright Pearson Prentice Hall
10-2
DNA replication takes place during the
a. S phase of the cell cycle.
b. G1 phase of the cell cycle.
c. G2 phase of the cell cycle.
d. M phase of the cell cycle.
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10-2
During mitosis, “sister” chromatids separate from
one another during
a. telophase.
b. interphase.
c. anaphase.
d. metaphase.
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Copyright Pearson Prentice Hall
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