Introducing Cells Cell Theory Microscopy Cell organelles Cell organelle function.
Unit 3 Cell Theory And Organelles
40
3.1 Cell Theory KEY CONCEPT Cells are the Basic unit of life.
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Transcript of Unit 3 Cell Theory And Organelles
3.1 Cell Theory
KEY CONCEPT Cells are the Basic unit of life.
3.1 Cell Theory
The cell theory grew out of the work of many scientists and improvements in the microscope.• Many scientists contributed to the cell theory.
3.1 Cell Theory
The cell theory grew out of the work of many scientists and improvements in the microscope.• Many scientists contributed to the cell theory.• More was learned about cells
as microscopes improved.
3.1 Cell Theory
The cell theory grew out of the work of many scientists and improvements in the microscope.• Many scientists contributed to the cell theory.• More was learned about cells
as microscopes improved.• The cell theory is a unifying
concept of biology.
3.1 Cell Theory
Early studies led to the development of the cell theory.• The Cell theory has three principles.
– All organisms are made of cells.
3.1 Cell Theory
Early studies led to the development of the cell theory.• The Cell theory has three principles.
– All organisms are made of cells.– All existing cells are produced by other living cells.
3.1 Cell Theory
Early studies led to the development of the cell theory.• The Cell theory has three principles.
– All organisms are made of cells.– All existing cells are produced by other living cells.– The cell is the most basic unit of life.
3.1 Cell Theory
Prokaryotic cells lack a nucleus and most internal structures of eukaryotic cells.• All cells share certain characteristics.
3.1 Cell Theory
Prokaryotic cells lack a nucleus and most internal structures of eukaryotic cells.• All cells share certain characteristics.
– Cells tend to be microscopic.
Bacterium(colored SEM; magnification 8800x)
3.1 Cell Theory
Prokaryotic cells lack a nucleus and most internal structures of eukaryotic cells.• All cells share certain characteristics.
– Cells tend to be microscopic.– All cells are enclosed
by a membrane.
Bacterium(colored SEM; magnification 8800x)
cell membrane
3.1 Cell Theory
Prokaryotic cells lack a nucleus and most internal structures of eukaryotic cells.• All cells share certain characteristics.
– Cells tend to be microscopic.– All cells are enclosed
by a membrane.– All cells are filled with
cytoplasm.
Bacterium(colored SEM; magnification 8800x)
cell membrane
cytoplasm
3.1 Cell Theory
There are two cell types: eukaryotic cells and prokaryotic cells.
3.1 Cell Theory
There are two cell types: eukaryotic cells and prokaryotic cells.• Eukaryotic cells have a
nucleus.nucleus
cell membrane
3.1 Cell Theory
There are two cell types: eukaryotic cells and prokaryotic cells.• Eukaryotic cells have a
nucleus.• Prokaryotic cells do
not have membrane- bound organelles.
nucleus
cell membrane
organelles
3.1 Cell Theory
There are two cell types: eukaryotic cells and prokaryotic cells.• Prokaryotic cells do not
have a nucleus.nucleus
cell membrane
organelles
3.1 Cell Theory
There are two cell types: eukaryotic cells and prokaryotic cells.• Prokaryotic cells do not
have a nucleus.• Prokaryotic cells do not
have membrane-bound organelles.
nucleus
cell membrane
organelles
cytoplasm
3.1 Cell Theory
KEY CONCEPT Eukaryotic cells share many similarities.
3.1 Cell Theory
Cells have an internal structure.
3.1 Cell Theory
Cells have an internal structure.• The cytoskeleton has many functions.
3.1 Cell Theory
Cells have an internal structure.• The cytoskeleton has many functions.
– supports and shapes cell
3.1 Cell Theory
Cells have an internal structure.• The cytoskeleton has many functions.
– supports and shapes cell– helps position and transport organelles
3.1 Cell Theory
Cells have an internal structure.• The cytoskeleton has many functions.
– supports and shapes cell– helps position and transport organelles– provides strength
3.1 Cell Theory
Cells have an internal structure.• The cytoskeleton has many functions.
– supports and shapes cell– helps position and transport organelles– provides strength– assists in cell division
3.1 Cell Theory
Cells have an internal structure.• The cytoskeleton has many functions.
– supports and shapes cell– helps position and transport organelles– provides strength– assists in cell division– aids in cell movement
3.1 Cell Theory
Several organelles are involved in making and processing proteins.
3.1 Cell Theory
Several organelles are involved in making and processing proteins.• The nucleus stores genetic information.
3.1 Cell Theory
Several organelles are involved in making and processing proteins.• The nucleus stores genetic information.• Many processes occur in the endoplasmic reticulum.
3.1 Cell Theory
Several organelles are involved in making and processing proteins.• The nucleus stores genetic information.• Many processes occur in the endoplasmic reticulum.• There are two types of endoplasmic reticulum.
3.1 Cell Theory
Several organelles are involved in making and processing proteins.• The nucleus stores genetic information.• Many processes occur in the endoplasmic reticulum.• There are two types of endoplasmic reticulum.
– rough endoplasmic reticulum
3.1 Cell Theory
Several organelles are involved in making and processing proteins.• The nucleus stores genetic information.• Many processes occur in the endoplasmic reticulum.• There are two types of endoplasmic reticulum.
– rough endoplasmic reticulum
– smooth endoplasmic reticulum
3.1 Cell Theory
Several organelles are involved in making and processing proteins. (continued)
3.1 Cell Theory
Several organelles are involved in making and processing proteins. (continued)• Ribosomes link amino acids to form proteins.
3.1 Cell Theory
Several organelles are involved in making and processing proteins. (continued)• Ribosomes link amino acids to form proteins.• Vesicles are membrane-bound sacs that hold materials.
3.1 Cell Theory
Other organelles have various functions.
3.1 Cell Theory
Other organelles have various functions.• Mitochondria supply energy to the cell.
3.1 Cell Theory
Other organelles have various functions.• Mitochondria supply energy to the cell.• Vacuoles are fluid-filled sacs that hold materials.
3.1 Cell Theory
Other organelles have various functions.• Mitochondria supply energy to the cell.• Vacuoles are fluid-filled sacs that hold materials.• Lysosomes contain enzymes to digest material.
3.1 Cell Theory
Other organelles have various functions.• Mitochondria supply energy to the cell.• Vacuoles are fluid-filled sacs that hold materials.• Lysosomes contain enzymes to digest material.• Centrioles are tubes found in the centrosomes.
3.1 Cell Theory
Other organelles have various functions.• Mitochondria supply energy to the cell.• Vacuoles are fluid-filled sacs that hold materials.• Lysosomes contain enzymes to digest material.• Centrioles are tubes found in the centrosomes.
– Centrioles help divide DNA.
3.1 Cell Theory
Other organelles have various functions.• Mitochondria supply energy to the cell.• Vacuoles are fluid-filled sacs that hold materials.• Lysosomes contain enzymes to digest material.• Centrioles are tubes found in the centrosomes.
– Centrioles help divide DNA.
– Centrioles form cilia and flagella.
