THE CELL. CELL THEORY All living organisms are made up of cells. All living organisms are made up of cells.

THE CELLTHE CELL

CELL THEORYCELL THEORY All living organisms are made up of All living organisms are made up of

cells.cells.

CELL THEORYCELL THEORY Cells are the basic unit of structure Cells are the basic unit of structure

and function in an organism.and function in an organism.

Cells control birth, growth, Cells control birth, growth, development, reproduction and development, reproduction and death. All lifedeath. All life

functions begin as a cellular functions begin as a cellular

process.process.

CELL THEORYCELL THEORY Organisms can be unicellular (one-Organisms can be unicellular (one-

celled) or multicellular (many-celled)celled) or multicellular (many-celled)

Cells contain organelles ( some with Cells contain organelles ( some with membranes), which are small membranes), which are small structures inside that do different structures inside that do different jobs.jobs.

All cells come from other cells.All cells come from other cells.

Cells can be classified into 2 Cells can be classified into 2 groups.groups.

Eukaryotic CellsEukaryotic Cells Prokaryotic CellsProkaryotic Cells

Cells can be classified into 2 Cells can be classified into 2 groups.groups.

Eukaryotic CellsEukaryotic Cells

Have a defined Have a defined nucleusnucleus..

Prokaryotic CellsProkaryotic Cells

Cells can be classified into 2 Cells can be classified into 2 groups.groups.

Eukaryotic CellsEukaryotic Cells

Have a defined nucleus.Have a defined nucleus.

Found in organisms Found in organisms that are made up that are made up

of many cells.of many cells.

Prokaryotic CellsProkaryotic Cells

Cells can be classified into 2 Cells can be classified into 2 groups.groups.

Eukaryotic CellsEukaryotic Cells

Have a defined nucleus.Have a defined nucleus.

Found in organisms that are Found in organisms that are made up of many cells.made up of many cells.

AnimalsAnimals

Prokaryotic CellsProkaryotic Cells

Cells can be classified into 2 Cells can be classified into 2 groups.groups.

Eukaryotic CellsEukaryotic Cells

Have a defined nucleus.Have a defined nucleus.

Found in organisms that are Found in organisms that are made up of many cells.made up of many cells.

AnimalsAnimals

PlantsPlants

Prokaryotic CellsProkaryotic Cells

Cells can be classified into 2 Cells can be classified into 2 groups.groups.

Eukaryotic CellsEukaryotic Cells Prokaryotic CellsProkaryotic Cells

No structured nucleusNo structured nucleus

Exist as single-celled Exist as single-celled organismsorganisms

BacteriaBacteria

Animal Cell Plant Animal Cell Plant CellCell

Nucleus: Is the “brain” of the cell. It controls cells’ functions and it contains DNA.

Animal Cell Plant CellAnimal Cell Plant Cell

Cell membrane (plasma membrane) :Allows for certain things to enter and exit the cell. It maintains cell’s homeostasis.

Ribosomes: Make proteins for the cells

Mitochondria: “power house of the cell”, this is where cells receive their energy.

Cell Wall: Supports and protects plant cells.

Chloroplast : Where plants absorb sunlight, and make food (carbohydrates).

Let’s look at some Let’s look at some actual plant and actual plant and

animal cells!animal cells!

Plant CellsPlant Cells

Animal CellsAnimal Cells

How would you classify this How would you classify this cell?cell?

How about this cell?How about this cell?

BACTERIA CELLBACTERIA CELL

Helpful or Harmful?Helpful or Harmful?

The SpreadThe Spread

Get Get ready to ready to

test test your your

Cell IQ!!!Cell IQ!!!

Question 1Question 1::

All living organisms are made up All living organisms are made up of cells.of cells.

A. TrueA. True

B. FalseB. False

Question 1Question 1::

All living organisms are made up All living organisms are made up of cells.of cells.

A. TrueA. True

Question 2Question 2::

According to the Cell Theory…According to the Cell Theory…

A. All cells have cell walls.A. All cells have cell walls.

B. All cells arise from other B. All cells arise from other cells.cells.

C. All cells have a nucleus.C. All cells have a nucleus.

Question 2Question 2::

According to the Cell Theory…According to the Cell Theory…

B. All cells arise from other B. All cells arise from other cells.cells.

Question 3:Question 3:

You can see most cells without a You can see most cells without a microscope.microscope.

A. TrueA. True

B. FalseB. False

Question 3:Question 3:

You can see most cells without a You can see most cells without a microscope.microscope.

B. FalseB. False

Question 4Question 4::

Plant cells have organelles (parts) Plant cells have organelles (parts) that animal cells do not.that animal cells do not.

A. TrueA. True

B. FalseB. False

Question 4Question 4::

Plant cells have organelles (parts) Plant cells have organelles (parts) that animal cells do not.that animal cells do not.

A. TrueA. True

Question 5:Question 5:

All cells have…All cells have…

A. A nucleusA. A nucleus

B. A membraneB. A membrane

C. ChloroplastsC. Chloroplasts

Question 5:Question 5:

All cells have…All cells have…

B. A membraneB. A membrane

Question 6Question 6::

Which of the following choices is Which of the following choices is not a part of a cell?not a part of a cell?

A. LungA. Lung

B. VacuoleB. Vacuole

C. ChloroplastC. Chloroplast

Question 6Question 6::

Which of the following choices is Which of the following choices is not a part of a cell?not a part of a cell?

A. LungA. Lung

Question 7Question 7::

What type of cell has a What type of cell has a nucleus?nucleus?

A. Prokaryotic cellA. Prokaryotic cell

B. Eukaryotic cellB. Eukaryotic cell

C. None of the aboveC. None of the above

Question 7Question 7::

What type of cell has a What type of cell has a nucleus?nucleus?

B. Eukaryotic cellB. Eukaryotic cell

Question 8Question 8::

Bacteria are considered to be Bacteria are considered to be prokaryotes.prokaryotes.

A. TrueA. True

B. FalseB. False

Question 8Question 8::

Bacteria are considered to be Bacteria are considered to be prokaryotes.prokaryotes.

A. TrueA. True

Question 9Question 9::

Some bacteria can be the cause of Some bacteria can be the cause of diseases.diseases.

A. True A. True

B. FalseB. False

Question 9Question 9::

Some bacteria can be the cause of Some bacteria can be the cause of diseases.diseases.

A. True A. True

Question 10Question 10::

You will never find a __________ in You will never find a __________ in a bacteria cell.a bacteria cell.

A. Cell WallA. Cell Wall

B. Cell MembraneB. Cell Membrane

C. Cell NucleusC. Cell Nucleus

Question 10Question 10::

You will never find a __________ in You will never find a __________ in a bacteria cell.a bacteria cell.

C. Cell NucleusC. Cell Nucleus

CELLSCELLS All living organisms are made up of cells.All living organisms are made up of cells. Cells are the basic unit of structure and Cells are the basic unit of structure and

function in an organism.function in an organism. All cells arise from other cells.All cells arise from other cells. Bacteria are helpful and harmful to Bacteria are helpful and harmful to

humans and the environment.humans and the environment. Microscopes are important scientific tools.Microscopes are important scientific tools.

Cells Cells Cells!!!Cells Cells Cells!!!