CELL THEORY

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

CELL THEORY Cells are the basic unit of structure and function in an organism. Cells are the basic unit of structure and function in an organism. Cells control birth, growth, development, reproduction and death. All life Cells control birth, growth, development, reproduction and death. All life functions begin as a cellular functions begin as a cellular process. process.

CELL THEORY Organisms can be unicellular (one-celled) or multicellular (many-celled) Organisms can be unicellular (one-celled) or multicellular (many-celled) Cells contain organelles ( some with membranes), which are small structures inside that do different jobs. Cells contain organelles ( some with membranes), which are small structures inside that do different jobs. All cells come from other cells. All cells come from other cells.

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

Cells can be classified into 2 groups. Eukaryotic Cells Have a defined nucleus. Prokaryotic Cells

Cells can be classified into 2 groups. Eukaryotic Cells Have a defined nucleus. Found in organisms that are made up of many cells. Prokaryotic Cells

Cells can be classified into 2 groups. Eukaryotic Cells Have a defined nucleus. Found in organisms that are made up of many cells. Animals Animals Prokaryotic Cells

Cells can be classified into 2 groups. Eukaryotic Cells Have a defined nucleus. Found in organisms that are made up of many cells. Animals Animals Plants Plants Prokaryotic Cells

Animal Cell Plant Cell

Nucleus: Is the “brain” of the cell. It controls cells’ functions and it contains DNA. Animal Cell Plant Cell Animal 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 actual plant and animal cells!

Plant Cells

Animal Cells

How would you classify this cell?

How about this cell?

Cells can be classified into 2 groups. Eukaryotic Cells Prokaryotic Cells No nucleus

Cells can be classified into 2 groups. Eukaryotic Cells Prokaryotic Cells No structured nucleus Exist as single-celled organisms

Cells can be classified into 2 groups. Eukaryotic Cells Prokaryotic Cells No structured nucleus Exist as single-celled organisms Bacteria Bacteria

BACTERIA CELL

Helpful or Harmful?

The Spread

Get ready to test your Cell IQ!!!

Question 1: All living organisms are made up of cells. A. True B. False

Question 1: All living organisms are made up of cells. A. True

Question 2: According to the Cell Theory… A. All cells have cell walls. B. All cells arise from other cells. C. All cells have a nucleus.

Question 2: According to the Cell Theory… B. All cells arise from other cells.

Question 3: You can see most cells without a microscope. A. True B. False

Question 3: You can see most cells without a microscope. B. False

Question 4: Plant cells have organelles (parts) that animal cells do not. A. True B. False

Question 4: Plant cells have organelles (parts) that animal cells do not. A. True

Question 5: All cells have… A. A nucleus B. A membrane C. Chloroplasts

Question 5: All cells have… B. A membrane

Question 6: Which of the following choices is not a part of a cell? A. Lung B. Vacuole C. Chloroplast

Question 6: Which of the following choices is not a part of a cell? A. Lung

Question 7: What type of cell has a nucleus? A. Prokaryotic cell B. Eukaryotic cell C. None of the above

Question 7: What type of cell has a nucleus? B. Eukaryotic cell

Question 8: Bacteria are considered to be prokaryotes. A. True B. False

Question 8: Bacteria are considered to be prokaryotes. A. True

Question 9: Some bacteria can be the cause of diseases. A. True B. False

Question 9: Some bacteria can be the cause of diseases. A. True

Question 10: You will never find a __________ in a bacteria cell. A. Cell Wall B. Cell Membrane C. Cell Nucleus

Question 10: You will never find a __________ in a bacteria cell. C. Cell Nucleus

CELLS All living organisms are made up of cells. All living organisms are made up of cells. Cells are the basic unit of structure and function in an organism. Cells are the basic unit of structure and function in an organism. All cells arise from other cells. All cells arise from other cells. Bacteria are helpful and harmful to humans and the environment. Bacteria are helpful and harmful to humans and the environment. Microscopes are important scientific tools. Microscopes are important scientific tools.

Cells Cells Cells!!!