Wed 11/20
• Chp.6&7 Test
• After: Chp.8 Title Page
– DUE tomorrow
Thur 11/21
• Grades posted
– Includes Test & INB Check
– Any questions/problems with INB Check see
me after notes today
***Chp.6&7 Test Retakes available before or
after school till next WEDNESDAY!!!
Title page-pg.45
Ch 8 title page
In: Pg.46
1. Chromosome model
• Draw the model
chromosome on your
paper
• Label the following on
your diagram—
chromosome, chromatids,
centromere
2. Why does the
chromosome look so
bumpy?
Centromere
Chromatids
C
h
r
o
m
o
S
o
m
e
• Why do you think a
chromosome looks so
bumpy?
Chromosomes
• Rod-like structures made of
– DNA
– Proteins called histones
which help shape and pack
DNA
• Each half called a
chromatid
– Duplicate before cell division
• Two identical parts
– Centromere holds them
together
Chromosome Number
• Varies with species
• Some have same
number
– Carrot and lettuce = 18
– Potatoes, Plums,
Chimpanzees and
Gorillas = 48
Chromosome Number
• Diploid (2n) – normal
cell
• Haploid (1n) – dividing
cell
Chromosome Differences
• Prokaryote
– Most only contain one
Chromosome
– Attached to inside of
the cell membrane
– Circular DNA
• Eukaryote
– Many Chromosomes
– Found inside nucleus
– Compacted to fit inside
the nucleus
Human Chromosomes
•
•
•
•
46 or 23 pairs
Autosomes = 44
Sex Chromosomes = 2
Pair of autosomes called
– Homologous
chromosomes or
homologues
• Same size and shape
• Different from other pairs
• Have same gene locations
• Karyotype
Spectral Karyotyping
– Photomicrograph of
chromosomes dividing in
normal cell
Pg.47
Set up Cornell Notes
Title them: Chp.8 Cell
Reproduction
How do cells reproduce?
• Cell division is the
process in which
cells reproduce
themselves.
• Cell cycle is the
stages a cell goes
through to make
more cells.
G1 (growth;Gap
11 hrs.
1)
•Rapid cell growth
•Cell doubles in size
•Enzymes + organelles
double in number
S=Synthesis
•Growth
•DNA makes a copy
of itself
G2=Gap 2
7 hrs.
•Rapid Growth
•Final preparation for
cell division
3 hrs.
Cell Division in Prokaryotes
• Binary Fission
– Two identical cells
produced from one cell
– Asexual reproduction
• Only 1 parent
• No genetic diversity
Cell Division in Eukaryotes
(m phase of cell cycle)
• Mitosis:
– Occurs in organisms for
growth, development,
repair or asexual
reproduction
– Creates identical
cells(2n)
Finish Cornell Notes
• Write 3 questions
• Write 3-sentence summary
Thru 2:Pg 48-49
Chp.8 3-Column Vocab
1. Chromosome
2. Histone
3. Chromatid
4. Centromere
5. Homologous
chromosomes
6. Diploid
7. Haploid
8. Binary fission
9. Mitosis
10. Interphase
11. Cytokinesis
Homework
• Work on vocab  DUE MONDAY!!!
OUT – pg.46
How is the cell cycle like a
human life cycle?
Fri 11/22
***Chp.6&7 Test Retakes available before
or after school till next WEDNESDAY!!!
Today & Monday = one big day
• Describe the phases of the cell cycle.
In: pg.50
Write down 5 facts as you watch the Cell
Division video clip
1.
2.
3.
4.
5.
Pg.51
Cell
Cycle
C
The cell cycle
consists of…
1. Interphase
2. Mitosis/Cytokinesis
Remember: IPMAT!
Pg.53 – Set up Cornell Notes
(skip pg.52….for now…)
• Title: Mitosis
Mitosis:
• Division in body cells
– all cells that are not gametes (reproductive cells).
• Creates 2 identical daughter cells.
• Replaces old cells, growth
• Starts as soon as the egg is fertilized and
ends at death.
• Has 4 stages:
– prophase, metaphase, anaphase & telophase.
Prophase
1. Chromatin condenses into chromosomes (visible)
2. Nuclear membrane dissolves
Metaphase – think “M” for Middle
1.Chromosomes
line up in the
middle of the cell
2.Each
chromosome has
been copied and
has two pairs of
individual
chromatids
ANAPHASE – think “A” for apart
1.Chromatids
move apart to
the opposite
ends of the cell
Telophase – think “T” for two
1.Chromosomes
reach the
opposite ends
2.Nuclear
envelopes
reform around
the two sets of
DNA
After Mitosis
Cytokinesis
– Division into two
cells
– Animal cells
• Uses cleavage
furrows
– Plant cells
• Uses cell plate
Finish Cornell Notes
• Write 3 questions
• Write 3-sentence summary
Pg. 52 – Stages of Mitosis
Diagram
• Draw figure 8-6 from pg. 156 in your
text book.
• Label all the parts
Out – do tomorrow
Mon 11/25
• Review Mitosis  animation & hand model
• Mitosis Cloze & Event Map
• Start Mitosis Modeling Activity (if time)
IN
• Review Mitosis  animation & hand
model
Mitosis Practice
Pg.54
•Cell Cycle
CLOZE passage
Pg.55
• Mitosis Event
Organizer
WHO?
WHEN?
WHY?
EVENT
HOW?
MITOSIS
WHERE?
SIGNIFICANCE?
Why?
To make
identical
(2n) cells
Who?
Plants
Animals
When?
Fertilization
to Death
Where?
Body
Cells
How?
Mitosis
Prophase,
Metaphase,
Anaphase, and
Telophase
Significance?
Replaces
cells/Growth/
Repair
Homework
• Finish Mitosis CLOZE and event map
OUT – pg.50
Draw the cell in interphase.
Label the following:
1. Nuclear envelope
2. Cell membrane
3. Nucleus
4. Chromatin-this is the DNA
when it is all tangled up
(before it condenses
into chromosomes).
5. Centrosomes-the green
things
Question:
What is Chromatin?
Tues 11/26 & Wed 11/27
• Review cell cycle, mitosis hands
• Mitosis Modeling Activity
• Start & Finish Hexaflexagon
Objective
• Describe the phases of the cell cycle
In: pg.56
• Write down 5 facts as you watch the Mitosis
video clip
• 1.
• 2.
• 3.
• 4.
• 5.
Mitosis Video Clip
Pg.57 - Stages of Mitosis Model
• Use the contents of the bag to model what is happening to chromosomes
during interphase and the 4 stages of mitosis.
• Practice each stage until you have it memorized…each person will be
given a stage to demonstrate for points.
Analysis Questions:
1. In this activity, what represented:
– Replicated chromosomes
– Sister chromatids
– Nuclear envelope
– Spindle fibers
2. How many chromosomes did the parent cell have?
3. Each daughter cell?
4. What was the diploid # for the cell?
5. What was the haploid # for the cell?
Mitosis Hexaflexagon
Procedure:
1. Cut out the hexaflexagon.
2. Place the side without the letters or
vertical lines face up. Label the
diamonds as shown in the picture
with the names of the phases of
mitosis. (Prophase, Metaphase,
Anaphase, and Telophase)
3. Draw a color picture for each phase
in second diamond and describe
what happens in the third diamond.
4. Follow the directions for folding the
hexaflexagon.
Out – pg.56
1. What is cytokinesis?
2. How would cytokinesis differ
between plant and animal cells?
Wed 11/27
• Finish & Check Hexaflexagons  take
grade
Mon 12/2
• Chp.8 Cell Cycle & Mitosis TEST is
THURSDAY!!!!
• Next INB Check is THURSDAY!!!
• Cell Cycle and Time Lab
– Website activity
In: pg.58
1. About how
long does it
take a cell to
go thru the
cell cycle?
G1 =Gap 1
•Rapid cell growth
11 hrs.
•Cell doubles in size
•Enzymes + organelles
double in number
S=Synthesis
•Growth
•DNA makes a copy
of itself
2. What stage
does the cell
spend the
most time in?
G2=Gap 2
7 hrs.
•Rapid Growth
•Final preparation
for cell division
3 hrs.
Pg.59 - The Cell Cycle and Time
• Go to the following website
http://www.biology.arizona.edu/cell_bio/activ
ities/cell_cycle/cell_cycle.html
• Fill out the data sheet and complete graph
and questions and glue in lab sheet as a
flip up.
onion root tip
Homework
• Finish the lab sheet.
Out – pg.58
• What would happen to an organism if
its cells couldn’t leave interphase and
undergo mitosis?
Tuesday 12/3
• Chp.8 Cell Cycle & Mitosis TEST is
THURSDAY!!!!
• Next INB Check is THURSDAY!!!
Objective
• Discuss specific examples of
disruptions of homeostasis.
In: pg.60
Watch the movie clip and finish the following
sentences:
1. Cancer cells are different from normal
cells because they…..
2. A tumor is…
3. A tumor is harmful because it…
4. Cancer is caused by…
5. Cancer can be treated by…
Pg.61- Controlling the Cell Cycle
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
What does a regulatory gene do?
What is cancer caused by?
What is a mutation?
What is a tumor?
What are carcinogens?
Why is it difficult for scientists to study the effects of exposure
to carcinogens in humans?
Why is smoking dangerous?
Why should you wear sunscreen?
What are 3 treatments for cancer?
Immunotherapy is an experimental technique for treating
cancer. In this technique, the body’s immune system is
boosted so that it can destroy cancerous cells. What is a
possible advantage that immunotherapy may have over
chemotherapy?
Homework
• Finish “Controlling the Cell Cycle” article
questions
Out – pg.60
1. What are the 3 stages of interphase?
2. Some cells go into the Go phase, what
do you think this means?
3. What kinds of cells do you think go
into Go?
Wednesday 12/4
•
•
•
•
INB Quiz  get out half sheet, #1-10
Chp.8 Study Guide
INB Check tomorrow
Chp.8 Cell Cycle & Mitosis Test tomorrow
Chp.8 Study Guide
• DUE TOMORROW!!!!
Thursday 12/5
• Collect Study Guides
• Chp.8 Cell Cycle Test today
• INB Check today
After test…
• Pg.63  Title Page Chp.10
–Write title of chapter from textbook
–Draw 3 pictures from chp.10
–Write 3 key words from chp.10
–Color with at least 3 colors