Download Cell Cycle PPT with Flashcard instructions

STAGES OF THE CELL
CYCLE
Interphase, prophase, metaphase, anaphase, telophase, and cytokinesis.
Warm-up Questions:
• In what phase does the cell spend most of its life?
• What is the name of the process in which a cell duplicates it
DNA and splits into two identical cells?
INTERPHASE
 Cells spend most of their time in interphase, it
is considered the “normal” stage for a cell.
There are three stages of interphase, with each
phase ending when a cellular checkpoint checks the
accuracy of the stage's completion before
proceeding to the next.
Three stages of
interphase:
• G1
• Sythesis
The parent cell contains 46
• G2
chromosomes to be reproduced.
All stages other than interphase
happen during the M phase/mitotic
phase.
PROPHASE
 Prophase is the first “real” phase of
mitosis.
During prophase, the complex of
DNA and proteins contained in the
nucleus, known as chromatin,
condenses.
Mitotic spindles are formed.
METAPHASE
 Metaphase is the second stage of mitosis.
During metaphase, the cell's
chromosomes align themselves in the
middle of the cell.
Spindles move to opposite poles and
fibers connect them to the
chromosomes. Chromosomes are
their most condensed.
ANAPHASE
Anaphase is the third stage of
mitosis.
 Anaphase is the stage of the cell cycle
when chromosomes are split and the sister
chromatids move to opposite poles of the
cell.
TELOPHASE
 Telophase is the fourth stage of
mitosis.
During this phase, the sister
chromatids reach opposite poles.
The small nuclear vesicles
(envelope) in the cell begin to reform around the group of
chromosomes at each end.
Mitosis video
Technically the final
stage of mitosis.
CYTOKINESIS
 Cytokinesis is the final stage in the cell
cycle.
Cytokinesis is the physical process
of cell division, which divides the
cytoplasm of a parental cell into
two daughter cells.
Two daughter cells are
produced, both containing
46 chromosomes identical
to the parent cell.
ACTIVITY
 FLASH CARDS!!!!
• Use supplied note cards to create flash cards for the stages of the cell
cycle.
• Each card must contain a drawing of the stage, the order it comes in, and
a basic description of what is happening in the stage including G phases
and M phase.
THIS IS FOR A GRADE