1. Life is Cellular
Wednesday, January 23, 2013

2. Warm-Up: Tuesday, January 23, 2013
Work together with your classmates using your pieces to form one, big puzzle piece!!
Objectives:
By the end of class today, students will be able to:
Describe the cell theory and differentiate between prokaryotic and eukaryotic by completing their “Life is Cellular” packet

3. Vocabulary Cell- Cell theory- Cell Membrane-
Collection of living matter enclosed by a barrier that separates the cell from its surroundings; basic unit of all forms of life.
Sentence: All ________________ are made up of cells.
Cell theory-
Idea that all living things are composed of cells and new cells are produced from existing cells.
Sentence: New cells are produced from _________ __________; this is called the cell theory.
Cell Membrane-
Thin, flexible barrier around a cell; regulates what enters and leaves the cell.
The cell membrane helps _____________ the cell.
Vocabulary
JENGA: building blocks of life. Think of each block as a cell. As the cell theory explains, each new cell replaces existing cells. What happens when that does not happen? The jenga falls apart/animal dies when cells are not replaced.

4. Sentence: Cell walls are found in _____________ cells.
Strong layer around the cell membrane in plants, algae, and some bacteria.
Sentence: Cell walls are found in _____________ cells.
Nucleus-
large structure inside some cells that contains the cell’s genetic material (DNA) and controls the cell’s activities.
Sentence: The nucleus carries _________________. It acts like the ________ of the cell.
Cytoplasm-
material inside the cell membrane- but not including the nucleus.
Sentence: The cytoplasm contains the ____________ within the cell; except the ___________.

5. 2 Types of Cells… 1. Prokaryote- 2. Eukaryote-
single-celled microorganism that lacks a nucleus.
Sentence: Prokaryotes have no ________, such as ________________.
2. Eukaryote-
organism whose cells contain nuclei
Sentence: Eukaryotes have a __________ , such as ______________.
Prokaryotes have no NUCLEUS, like E COLI, a BACTERIA
Eukaryotes have a NUCLEUS, like RED BLOOD CELLS/ animal cells/ plant cells
Nucleus:

6. Sentence: “Organelles have specific _________ within the _________.”
Organelle: Specialized structure that performs important cellular functions within a eukaryotic cell.
Sentence: “Organelles have specific _________ within the _________.”
Prokaryotes have no NUCLEUS, like E COLI, a BACTERIA
Eukaryotes have a NUCLEUS, like RED BLOOD CELLS/ animal cells/ plant cells
Nucleus:

7. Life is Cellular 1. Cell Theory states three main points:
A. All living things are composed of cells.
B. Cells are the basic units of structure and function in living things.
New cells are produced from existing cells

8. 2. Prokaryotes and Eukaryotes
A. Cells of Prokaryotes do not have a nucleus, but cells of Eukaryotes do.
B. Prokaryotes: have cell membranes and cytoplasm but do not contain nuclei
**All bacteria are prokaryotes

9. Eukaryotes: do contain nuclei, a cell membrane and cytoplasm, plus organelles (specialized structures that perform important cellular functions)
e. Can be single-celled organisms or large multicellular organisms
f. All plants, animals, fungi, and many microorganisms are eukaryotes

10. Essential Questions Think, Pair, Share
What is the difference between an prokaryote and a eukaryote cell?
Prokaryote Eukaryote
Sentence Starter:
“A prokaryote/eukaryote cell has _________. An example would be ______________.”
Be prepared to share!!!

11. Draw the two different cells:

12. Create a Table at the End of your notes:
Prokaryotes
Eukaryotes
Has organelles in the cytoplasm
No Nucleus
Bacteria
Has a nucleus

13. Warm up

14. Thursday, January 24th 2013 Warm-Up
List the 3 pain points of the CELL THEORY.
FUN FACT! – The human body is made up of TRILLIAN cells!!!!!
Objective: By the end of the period, students will be able to identify at least 5 organelles and describe their functions by participating in a group activity.
Play Video

15. What is an Organelle?? Organelle = “little organ”
A specialized structure that performs important cellular functions within a eukaryotic cell
What are some organelles we have already discussed in class?

16. Organelles of the Cell Review…
Cell Wall
In plant cells, but not animal cells
Provides support and protection for the cell: ridged, strong, stiff
Made mostly of cellulose: a tough carbohydrate fiber
Comparable to farm fence: keeps the cell (dairy cow herd) safe from the outside environment.

17. Organelles of the Cell Cell Membrane
Thin, flexible barrier around the cell
Regulates what enters & leaves the cell
In both plants & animals
Provides support, protection & controls movement of materials in & out of cell
Comparable to a farm gate: keeps some things off the dairy while allowing some things to pass through.

18. Cytoplasm Material inside the cell membrane, not including nucleus
In plant & animal cells
Supports & protects cell organelles
Comparable to a pasture/field/open space on a dairy farm: contains the parts of the cell.

19. The Cell’s Organelles! Nucleus
Inside the cell; contains genetic material
Controls cells activities
In plant AND animal cells
The control center of the dairy farm is the farm office!!

20. Nucleolus (Nucleoli) Small, dense region within the nucleus
Where DNA is stored
In plant AND animal cells
Nucleolus is comparable to FARM RECORDS on a dairy farm… Because?

21. In the cell dwells organelles!
Nuclear Envelope
Surrounds the nucleus, double membrane
Controls movement of materials in & out of nucleus
In plant AND animal cells
It is the fence around the dairy farm office. Why is that?

22. Endoplasmic Reticulum (E.R.)
Network of tubes or membranes – smooth and rough
where parts of the cell’s membrane are assembled and carries materials through the cell.
In both plant and animal cells
On a dairy farm, these would be pens and corrals because…

23. Ribosome
Free bodies found throughout the cytoplasm or bound to the E.R.
Produces proteins
In both animal and plant cells
Compared to a dairy cow: Dairy cows produce milk just like ribosomes produce protein!
Protein

24. Mitochondria Bean-shaped with inner membranes
Breaks down sugar molecules into energy; POWER stations!
In both animal and plant cells
Much like a dairy manure digester that collects methane gas from manure and uses it to generate electricity.

25. Golgi Body/Apparatus
Modifies, sorts, & packages proteins for storage in the cell or release outside of the cell.
Appears to be folded
Plant & animal cells
Comparable to a dairy products processing plant: where cheese, milk, other dairy products are packaged and shipped out!

26. Vacuole Vacuole Fluid-filled sacs Store food, water, waste
Plant cells have a few, large vacuoles while animal cells have many small ones

27. Lysosome
Lysosome
Helps break down materials into smaller molecules that can be used by the cell
Small, Round with a membrane
Plant & animal cells
What breaks down material on a dairy farm?

28. Chloroplasts
Green, oval, usually containing chlorophyll (green pigment)
Uses energy from the sun to make food for the plant (photosynthesis)
In plant cells NOT animal cells
Can be comparable to solar energy panels. Why is this?

29. Plant Cell
Animal Cell