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Week 13, Day One. HW # 43 - Compare the L (in your KWL) to what is said on pgs. 84 & 85 of your text. Add any additional information that you feel is important. Perform your Cell Theory Rap for a friend/parent/sibling/pet. Warm up

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Week 13 day one

Week 13, Day One

HW # 43- Compare the L (in your KWL) to what is said on pgs. 84 & 85 of your text. Add any additional information that you feel is important.

Perform your Cell Theory Rap for a friend/parent/sibling/pet.

Warm up

(collect last week’s warm up & parent letter)

Where do cells come from? How do you know?



Homework response check
Homework Response/Check

Did you complete your Fiber Identification lab conclusion? If not, put it in your Panther Planner to complete.


Week 13 day one

Goals for Today

  • Cell Theory



Week 13 day one

The Cell Theory

Hairy T-cell


Definition
Definition

There are 3 parts to cell theory.

1.All living things are made of cells.


Part 2 of the theory
Part 2 of the Theory

2. The cell is the basic structural and functional unit of life.


Part 3 of the theory
Part 3 of the Theory

3. All cells come from pre-existing cells.

yeast cells dividing


Who came up with this theory
Who came up with this theory?

All plants are made of cells!

1. Schleiden (circa 1838)

Onion skin cells


Who came up with this theory1
Who came up with this theory?

All animals are made of cells!

2. Schwann

Human red blood cells


Who came up with this theory2
Who came up with this theory?

3. Virchow

All cells come from pre-existing cells!


How big are cells
How big are cells?

  • Microscopic (mostly)

  • Measured in microns µm

  • (micrometers).

  • A µm is one millionth of a meter =

  • 10-9 m = one thousandth of 1 mm.


How big are cells1
How big are cells?

Smallest free-living cell =

Mycoplasma genitalium

Size = 0.2 to 0.3 µm


How big are cells2
How big are cells?

  • Bacteria e.g. Eschericia coli (aka E.coli)

  • Size=1 µm by 3 µm


How big are cells3
How big are cells?

  • Human red blood cell = 8 µm in diameter


How big are cells4
How big are cells?

  • Largest cell on the human body =

    ovum

  • Size=

  • 1000 µm in diameter

    (1 mm)


How big are cells5
How big are cells?

  • Smallest cell in the human body =

    sperm cell.


How big are cells6
How big are cells?

  • Largest cell with a metabolism =

    Chaos chaos

    Size=1-5 mm in length.

    common name =

    Giant Amoeba

Chaos diffluens, is an amoeba closely related to the giantamoebae


How big are cells7
How big are cells?

  • Largest cell = yolk of an ostrich egg




How can we study cells
How can we study cells?

Problem:

They are microscopic!

Solution:

Use a microscope!


Types of microscopes
Types of Microscopes

  • Compound light microscope

    • Light passes through lenses to magnify image up to 1000X

    • Can observe living cells


Types of microscopes1
Types of Microscopes

2. Electron microscope

  • Uses a beam of electrons to magnify image

    > 1000X

  • Kills cells being observed


Week 13 day one

Cell Theory Rap

http://www.youtube.com/watch?v=wiZFCMrx4Kg&noredirect=1


Common features of all cells
Common features of all cells

Small size – allows materials to move via diffusion

  • Diffusion = process by which molecules move from levels of high concentration to levels of low concentration until equilibrium is reached


Diffusion
Diffusion

  • Google Image Result for http://www.indiana.edu/~phys215/lecture/lecnotes/lecgraphics/diffusion.gif


Common features of all cells1
Common features of all cells

1. Cell Membrane – selectively/differentially permeable (lets some things in and out)


Common features of all cells2
Common features of all cells

2.Cytoplasm – semi-fluid material in which cell organelles float


Common features of all cells3
Common features of all cells

3. Nucleic acid containing genetic code :

Which nucleic acid?

DNA


Common features of all cells4
Common features of all cells

4. Cytoskeleton – proteins that support the cell

(Microtubules &

microfilaments)


Common features of all cells5
Common features of all cells

5. Ribosomes

– make proteins


If cells could be really big
If Cells could be really big ……

Star Trek - The Immunity Syndrome


Bibliography
Bibliography

  • http://www.hotlinecancer.com/?cat=28

  • http://news.bbc.co.uk/1/hi/sci/tech/4636121.stm

  • http://www.thebacteriabusters.com/eColi.html

  • http://www.lungcancer.co.uk/how.htm

  • http://www.fi.edu/learn/heart/blood/red.html

  • http://biology.about.com/library/weekly/aa091400a.htm

  • http://www.pbs.org/wgbh/amex/babies/peopleevents/e_ovum.html

  • http://www.dkimages.com/discover/Home/Animals/Birds/Growth-and-Development/Ostrich/Ostrich/Ostrich-15.html

  • http://www.flickr.com/photos/71751551@N00/1262329163/

  • http://commons.wikimedia.org/wiki/Image:Ostrich_egg.jpg

  • http://www.mambalam.net/slideshow.php?set_albumName=Animalia

  • http://strangebenevolent.blogspot.com/2007/07/meerkats-and-ostriches.html

  • www.madsci.org/posts/archives/dec97/878139903.Cb.r.html

  • http://en.wikipedia.org/wiki/Amoeba_proteus

  • http://en.wikipedia.org/wiki/The_Immunity_Syndrome_(Star_Trek


Bibliography1
Bibliography

  • http://www.pacpress.com/level3/micron.htm

  • Google Image Result for http://www.indiana.edu/~phys215/lecture/lecnotes/lecgraphics/diffusion.gif

  • http://commons.wikimedia.org/wiki/Image:Diffusion.jpg

  • http://library.thinkquest.org/C004535/cell_membranes.html

  • http://sun.menloschool.org/~cweaver/cells/e/ribosomes/

  • http://www.elmhurst.edu/~chm/vchembook/580DNA.html

  • http://sciencecity.oupchina.com.hk/biology/student/glossary/cytoplasm.asp

  • http://www.uic.edu/classes/bios/bios100/lecturesf04am/lect06.htm