Cells - K12Share

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Friday, September 19th
OBJ 1: State the parts of the cell theory.
OBJ 2: Explain why cells are so small.
OBJ 3: Calculate a cell’s surface-to-volume ratio.
OBJ 4: List the advantages of being multicellular
OBJ 5: Explain the difference between prokaryotic
cells and eukaryotic cells.
Warm-up: When Hooke saw “juice” in some cells,
what was he looking at? Why did Hooke think cells
existed only in plants and fungi and not in
animals?
Homework: Read pages 4-8 and 9-15. Protein
Deficiency presentations due 10/. *Microscope
QUIZ on 9/25
Quick notes
 Microscope
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To Do
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Robert Hooke (1665)
Cork
Cells only in plants
Anton van Leeuvenhoek (1673)
Compared blood cells of fish, birds & frogs
to that of humans & dogs
Yeasts in bread = unicellular
First Cells
All organisms are composed of 1 or
more cells.
2. The cell is the basic unit of life in all
living things.
3. All cells come from existing cells.
1.
Cell Theory
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Cell membrane
DNA
Cytoplasm- jelly-like substance that
protects organelles and provides an
internal highway to transport materials.
Organelles- structures INSIDE cells
Small in size*
Cell Similarities
Cells need a larger surface area
 When cells grow, (as the volume
increases) outer surface grows too!(but
not as fast!)

Surface Area to Volume Ratio
Ability to grow larger without loosing its
ability to get the materials for survival
 Specialized cells perform a variety of
functions
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Benefits of Being Multicellular
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Does not have a nucleus
also known as bacteria
world’s smallest cells
DNA is long, circular (like a rubber band)
No membranes around their organelles
Prokaryotic Cells
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Have a nucleus &
many other
membrane-covered
organelles
DNA stored in the
nucleus (and
there’s more of it!)
May have a cell wall
Cell divided into
compartments
Eukaryotic Cells
Prokaryotic Eukaryotic
No Nucleus
Nucleus
No Membranecovered organelles
Membrane-covered
organelles
Circular DNA
Linear DNA
Bacteria
All other cells
http://www.brainpop.com/te
chnology/scienceandindu
stry/microscopes/
Label worksheet
The Microscope
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Questions?!
Conclusion
Monday, September 22
OBJ 1-5. See previous notes/ slides.
Warm-up: Complete SR on page 15.
Homework: Study parts of the microscope
and notes. Begin reading pages 16-24.
*Protein Deficiency presentations due 10/.
*Microscope QUIZ on 9/25
Finish notes
 Label parts of the microscope
 Movie
 Your Creatures!

To Do…
Label parts
of the
microscope.
See the following
PowerPoint's:
1-Microscopes
2- Parts of the microscope
and their function
The Microscope
Microscopes in this lab are descendants of
those made in the 1600s.
 Still use similar models- compound
microscopes. Use 1 or more lenses to
magnify objects.
 Light microscopes: use compound lenses
and light. Lens bends or refracts light to
make object larger. *See next slide for
convex lens

Intro to the Microscope: Facts

Scanning electron microscopes (SEMs):
use electrons (negatively charged
electrical particles) to magnify objects up
to two million times. *Used to view
objects smaller than that which can be
seen by light microscopes.
Microscopes continued
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http://www.discoveryeducation.com/teachers
/free-lesson-plans/virtual-electronmicroscope.cfm
http://www.youtube.com/watch?v=Swcz_TJ
Mz0I
http://www.youtube.com/watch?v=9nUseN_
E-l0
http://www.youtube.com/watch?v=PMIU1fkI
PQs
How to prepare slides:
http://www.youtube.com/watch?v=GHnndVu
aync
Virtual Tour

Remember: how do we carry a
microscope?
TWO HANDS
The SCOPE!!
Review part of Microscope
Conclusion
Tuesday, September 23
OBJ 1-5. See previous notes/ slides.
Warm-up: Microscopes continued: name
the powers for each objective lens.
Homework: Study parts of the microscope
and notes. Continue reading pages 1624. *Protein Deficiency presentations due
(TBA)*Microscope QUIZ on 9/25

Addition to microscope diagrams
◦ http://www.youtube.com/watch?v=PMIU1fkIPQs
Movie
 Preparing slides

◦ http://www.youtube.com/watch?v=GHnndVuaync
Your turn to try
 Parts of the microscope song- one more
time!
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http://www.youtube.com/watch?v=Swcz_TJMz0I
To Do…

Can you name and describe two
organelles you read about last night for
homework?
Conclusion
Wednesday, September 24
OBJ 1-5. See previous notes/ slides.
Warm-up: Microscopes continued: describe
the difference between the fine adjustment
knob and coarse adjustment knob.
Homework: Review parts of the cell; finish
packets. Microscope QUIZ tomorrow!
Protein Deficiency presentations
 Movie
 Preparing slides

◦ http://www.youtube.com/watch?v=GHnndVuaync


Parts of the microscope song- one more
time!
http://www.youtube.com/watch?v=Swcz_TJMz0I
Notes: parts of the cell
To Do…

Can you name and describe two
organelles you read about last night for
homework?
Conclusion
Thursday, September 25
OBJ 1-5. See previous notes/ slides.
OBJ 6: Explain the function of each part of a eukaryotic
cell.
Warm-up: Microscope Quiz
Homework: Finish packet questions 6-10. Review
day’s notes; POP QUIZ potential! Bibliography of
your text book due tomorrow (use
www.easybib.com). Diseases that lack protein
project due 10/6.
QUIZ
 Review: Cell Similarities
 Parts of the cell
 Explain lab: The Letter E-Lab
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To Do…
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Eyepiece
Base
Fine adjustment knob
Stage
Arm
Revolving nose piece
Body tube
Stage clips
Diaphragm
Coarse adjustment knob
Light source
Low objective lens (x10)
Medium objective lens (x40)
High objective lens (x100)
Word Bank
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Cell membrane
DNA
Cytoplasm- jelly-like substance that
protects organelles and provides an
Organelles- structures INSIDE cells
Small in size*
Cell Similarities

Organelles: structures within the cell,
sometimes surrounded by a membrane.
When we talk about cells
we need to know the
appropriate WORDS!
- Looking Inside Cells
All cells are covered by a cell membrane
Separates outside materials from inside
materials
 Allows nutrients & waste products in & out
 Interacts with things outside the cell

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Cell Membrane
33
- Looking Inside Cells
-
Provides strength & support to the cell
membrane of a PLANT cell
Cell Wall
34
- Looking Inside Cells

The nucleus is the cell’s control center,
directing all of the cell’s activities.
Nucleus
35
- Looking Inside Cells

Mitochondria are known as the
“powerhouses” of the cell because they
convert energy in food molecules to
energy the cell can use to carry out its
functions.
Mitochondrion
36
- Looking Inside Cells
Is
similar to the system of hallways in a
building. Proteins and other materials move
throughout the cell by way of these
“hallways”. The spots on this organelle are
ribosomes, which produce proteins.
Endoplasmic Reticulum
37
- Looking Inside Cells

Receives proteins and other newly formed
materials from the endoplasmic reticulum,
packages them, and distributes them to
other parts of the cell.
Golgi Body
38
- Looking Inside Cells
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Stores water, waste and other materials.
Help support the cell.
Vacuole
39
- Looking Inside Cells
Digest food particles, wastes, cell parts,
and foreign invaders
 ONLY in Animal cells
 Contain ENZYMES
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Lysosomes
40
- Looking Inside Cells
Make food using the energy of sunlight
In Plants ONLY
Contain chlorophyll (makes cholorplasts
GREEN)
 Energy is trapped by chlorophyll and is
used to make sugar (aka photosynthesis)
 Sugar produced goes on to mitochondria
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Chloroplasts
41
1. Why is the cytoplasm important to
the cell?
2. What do you think is the most
important organelle to the cell?
Justify your answer.
Conclusion
42
Friday, September 26
OBJ 1-5. See previous notes/ slides.
Warm-up: Section Review on page 23.
Homework: Complete handout.
Review day’s notes; POP QUIZ
potential! SitN# 5 due 10/10. Disease
prjt due 10/6

What would be the negative effects of a
cell’s not having lysosomes?
Add this question to your Section
Review
Explain homework
 Preparing slides
 Read through today’s lab
 Letter “E” lab
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To Do…
Monday, September 29
OBJ 1-6. See previous notes/ slides.
OBJ 7: Describe the difference between animal cells and
plant cells.
Warm-up: What is the difference between animal
and plant cells?
Homework: Finish (we will see how far we get!!)
Letter “E” Lab questions (postponed until
tomorrow). Review day’s notes; POP QUIZ
potential! A/P cell QUIZ on Tuesday
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Check “How the Cell Operates” packet/ HW
Preparing slides/ Read through today’s lab
Letter “E” lab
To Do…
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What happens to the projected image when it
goes through the microscope?
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Why is it important to use the low power
objective lens to focus instead of the high
powered lens?
Conclusion
Tuesday, September 30
OBJ 1-7. See previous notes/ slides.
Warm-up: What is the purpose of a
bibliography?
Homework: 1.) SitN# 5 due 10/10.
Disease prjt due 10/6. SF due 10/1

Articles have been reviewed by scientists
in a particular field
◦ These scientists have compared YOUR data
with data from similar experiments to see if
what YOU say makes sense
Peer Reviewed
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A/P Quiz
Letter “E” lab
Science Fair STUFF!
To Do…

What happens to the projected image when it
goes through the microscope?

Why is it important to use the low power
objective lens to focus instead of the high
powered lens?
Conclusion
Wednesday, October 1
OBJ 1-7. See previous notes/ slides.
TURN IN DRAFT BIBLIOGRAPHY
Warm-up: What does a rigid cell wall allow
a plant cell to do? Why is this important for
the survival of a plant?
Homework: TEST on 10/9; study all
notes; SF Hypothesis/ Prediction due
10/8; SitN# 5 due 10/10
The Letter “E” lab
 Animal vs. Plant diagrams (OPTIONAL)
 GO: draw a plant cell & an animal cell
(OPTIONAL)

To Do…

What happens to the projected image
when it goes through the microscope?

Why is it important to use the low power
objective lens to focus instead of the high
powered lens?
The Letter E lab
Complete the graphic organizer, filling out
the function portion and checking whether
the organelle is found in just plants, just
animals, or both.
 OPTION: Once you are done, draw an animal cell & a plant cell on
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the back of your graphic organizer using colored pencils.
Graphic Organizer
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Cell city
◦ Open to page 16 and make sure you
have these terms written down
◦ These are the ONLY organelles you have to worry
about
◦ Google Cell City – the first link should be the activity for
today. (I will show you)
Conclusion
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Think back to the microscope: if the high
powered objective lens is in position and
the focal view is blurry, what should you
do? Explain.
Thursday, October 2
OBJ 1-7. See previous notes/ slides.
Warm-up: Take out animal and plant cell
from yesterday.
Homework: SitN# 5 due 10/10; SF
Hypothesis/ Prediction due 10/8; TEST on
10/9; study all notes
Plant and animal cell diagrams
2. Go over organelle functions
3. Venn Diagram/ handouts
4. G.O. of P & A cells
1.
To Do…
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
Cell membrane
Mitochondria
Nucleolus
Lysosome
Chromosomes (chromatin)
Golgi Body
Cytoplasm
Endoplasmic reticulum (Rough E.R.)
Nucleus
Ribosomes
Centrioles (Animal cell ONLY)
Vacuole
Endoplasmic reticulum (Smooth E.R.)
Parts of the Animal Cell
59
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
Cell wall
Golgi body
Mitochondria
Endoplasmic reticulum (Rough E.R.)
Nucleolus
Chromosomes (chromatin)
Nucleus
Cell membrane
Chloroplast (Think Green!)
Vacuole
Ribosomes
Mitochondria
Endoplasmic reticulum (Smooth E.R.)
Cytoplasm
Parts of the Plant Cell
61
Create a triple Venn diagram
Plant Cell
Animal
Cell
Prokaryotes
Cell wall
Ribosome
Endoplasmic reticulum
Mitochondria
Chloroplast
Golgi Complex
Vesicle
Vacuole
Lysosome
Cytoplasm
Organelles
Nucleus
Animal cell
Plant Cell
Bacteria
Circular DNA
Linear DNA
No Nucleus
Membrane coveredorganelles
No membranecovered organelles
1.
Why are cells so small? (hint: page
37 of text)
2.
List two organelles plant cells have
that animal cells do not?
Conclusion
Monday, October 6 &
Tuesday, October 7
OBJ 1-7. See previous notes/ slides.
Warm-up: Get ready for today’s lab
Homework: Chapter Review pg 28 #1-13.
TEST on 10/9. SF due 10/8. SitN# 5 due
10/10. QUEST on Thurs. 10/17
To Do… Lab
Be sure to follow all safety instructions.
Remember: iodine stains!
Cheek and Onion cell lab
What 5 characteristics of mitochondria
suggest that they may have originated
as bacteria? (See Book C, page 28)
Conclusion
Wednesday, October 8
OBJ 1-7. See previous notes/ slides.
Warm-up: Turn in DRAFT Hypothesis/ Prediction (place in
Science Bin)
Classwork: Finish Lab and complete Ch. Review- pgs 28-29 #1622
Homework: Finish Lab questions- due tomorrow. SitN# 5 due
10/10. SF Materials, Procedures, Variables (with Plan of
Analysis) and Number of Trials due 10/15. TEST tomorrow!
Open to page 16 and take out your
animal and plant cell diagrams.
◦ These are the organelles you have to worry about
◦ Google Cell City – the first link should be the activity for
today. (I will show you)
Cell City
◦ Name three organelles located in the animal cell, but
not in the plant cell. What do these organelles do in the
plant cell?
◦ What 5 characteristics of mitochondria suggest that
they may have originated as bacteria? (See Book C,
page 28)
Conclusion
Thursday, October 9
OBJ 1-7. See previous notes/ slides.
Warm-up: Place lab in Science bin.
Classwork: TEST right now!
Homework: Read and take notes on text
pages 34-37.
*SF M, P, V (with plan) and T due
10/15
To Do…
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TEST
Science Fair – do you have ANY questions!
Let’s begin the next chapter
Homework REMINDER!
*SF M, P, V (with plan) & T due 10/15
*Review Science Fair calendar.
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