Download Intro to cell cycle notes and Cell Cycle Flip Chart

Introduction to Cell
Cycle
How Organisms Grow
Cellular
Reproduction
We ALL need it and do it.
How are these children
different from you and I?
They have a
genetic disorder
Cell reproduction
depends on…
1. Cells making more cells = cell
division
Cell division
Parent Cell
Daughter Cell
Daughter cell
2. New cells being working replicas of the
original cell.
Cell Theory
• States that ALL cells come from
preexisting cells
• Cell division is the process
where new cells are produced
from one cell
– The result is two cells that
are identical to the original,
parent cell.
Why ALL Need Cellular
Reproduction:
• If unicellular:
– Needed for
individual
reproductio
n
– *Binary
Fission
•Asexual
•If multicellular:
-Needed for
reproduction
-Needed for growth
-Needed for repair
and replacement
Cell reproduction
depends on…
1. Cells making more cells = cell
division
Cell division
Parent Cell
Daughter Cell
Daughter cell
2. New cells being working replicas of the
original cell.
How does all of this
occur?
Q1
• Where is the information used to
“control” the cell located?
– The Nucleus
Q2
• What is located in the Nucleus
– DNA
– Chromosomes
What is inside the
Nucleus
• The nucleus contains DNA
– The cells instrument book
• DNA is packaged into structures
called chromosomes
• Before cell reproduction, it must
copy the chromosomes
– This copy must be accurate WHY?
How does all of this
occur?
Q3
• What must be done to make sure
each new cell gets a set of
“control” information?
– The contents of the nucleus must
be COPIED.
– This is called replication.
– Replication makes sure to get one
complete set of contents into each
of the new cells
How does all of this
occur?
Q4
• What is the name of the process or
processes that make sure this gets
done?
– Mitosis = nuclear division, body cells
– Meiosis = nuclear division, sex cells
– Cytokinesis = division of the cytoplasm
Set-up
• Label each of the flaps
–
–
–
–
–
–
1st: Cell Cycle
2nd: Interphase
3rd: Prophase
4th: Metaphase
5th: Anaphase
6th: Telophase
• Write up and down on flap
Set-up Cont.
• Fold up first flap to expose glue
portion. You will take cell cycle
notes here
• Continue trend for each labeled
flap
st
1
Flap: Cell Cycle
• Write length wise
• Paste picture of the Cell Cycle
here (The dial chart looking one)
• Cell grows, prepares for division,
divides to form 2 daughter cells,
an exact copy
nd
2
Flap: Interphase
• Includes 3 Phases
• Paste interphase picture here.
• G1: Cells increase in size and
make new proteins and
organelles.
• Synthesis (S): Chromosomes are
replicated and synthesis of DNA
molecules occurs
• G2: Shortest phase, used as
check system. Is cell ready?
rd
3
•
•
•
•
•
•
•
Flap: Prophase
1st Phase (along top)
Paste Prophase picture here.
Longest phase
Chromosomes visible
Centrioles separate
Envelope disappears
Draw picture of prophase (pg247)
th
4
•
•
•
•
•
Flap: Metaphase
2nd Phase (along top)
Paste Metaphase picture here.
Lasts few minutes
Chrom. Line up across center
Microtubules connect the
centromere to each chrom.
• Draw pic. Of metaphase (pg 247)
th
5
Flap: Anaphase
• 3rd Phase (along top)
• Paste Anaphase picture here.
• Sister chrom. Separate toward
poles
• Ends when chrom. Stop moving
• Draw pic of anaphase (pg 247)
th
6
•
•
•
•
•
Flap: Telophase
4th Phase (along top)
Paste telophase picture here.
Nuclear envelope reforms
Mitosis complete
Draw picture of telophase (pg
246)
Cytokinesis
• 7th flap
• This is the division of the
cytoplasm.
• Hand draw cytokinesis here. (It
looks similar to telophase
except the cells are completely
separated.