 HAPPY MONDAY 
Bellwork: Draw and fill in the missing blanks with the following words
G1 Phase
G2 PHASE
S PHASE
M PHASE
G1, S, AND G2 = INTERPHASE
G1 PHASE
S PHASE
M PHASE
G2 PHASE
Last two phases of the cell cycle:
M phase (mitosis)
and
Cytokinesis.
Mitosis (M phase):
division of the nucleus
Cytokinesis: the
cytoplasm divides and
2 new identical cells
are produced
Mitosis is
divided into four
phases:
prophase,
metaphase,
anaphase, and
telophase
(PMAT).
Chromosome
– draw this
Prophase: chromosomes (coiled DNA) are visible and the
nuclear envelope is gone.
DRAW THIS!
nucleus
chromosomes
Metaphase, the
chromosomes line up across
the center (middle) of the
cell.
Anaphase: the sister
chromatids split and the
chromosomes move away
into two groups near the
poles of the cell.
So, each chromosome consists of 2
identical sister chromatids.
chromosomes
DRAW THESE!
Sister chromatids
Telophase: the nuclear envelopes reappear to
form two new nuclei
(nuclei = more than 1 nucleus)
DRAW THIS!
Nuclei
…cell division is not complete after telophase…
Cytokinesis: division of the cytoplasm, two identical
cells produced
1
6
2
3
4
5
7
8
9
10
Always remember…
P
Prophase
M
Metaphase
A
Anaphase
T
Telophase
Let’s practice…
• On the back of your page, number 1-5.
• On the next slide, you will see 5 pictures.
• You need to figure out what phase each one is
in and write it down.
1
2
4
3
5
Card Sort
• Place the “CELL CYCLE” card in the middle of your
table.
• Place the numbered picture cards in a circle around
it, in the order you think they belong.
• Place the description cards with the pictures you
think they are describing.
• As we go through the PowerPoint, make corrections
as needed and place the phase names in their
proper order.
Cancer
What is cancer?
Uncontrolled cell growth.
What is cancer?
Cancer is a disorder in which some cells
lose the ability to control growth (cell
division).
The cell cycle has broken down and does
not function properly.
How does cancer happen?
1. Cancer cells divide uncontrollably
2. These cells form masses of cells called
tumors
3. Tumors damage surrounding (healthy)
tissue
How does cancer affect your
body?
After a certain point, cells from
the tumor get loose and spread
throughout an organism’s body.
This is called metastasis.
What can cause cancer?
Cancer can be caused by
1. tobacco
2. radiation (genetic mutations)
3. viral infection.