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Cell Anatomy
Cell Parts & their Function
What is a Cell?
A cell is the smallest unit that is
capable of performing life functions.
It is the basic unit of living things.
Cell Theory
• All living things are made up of cells.
• Cells are the smallest working units of all
living things.
• All cells come from preexisting cells through
cell division.
Examples of Cells
Amoeba Proteus
Plant Stem
Bacteria
Red Blood Cell
Nerve Cell
Cell Organelles
• Cell Parts are referred to as organelles.
Cell Wall
Most commonly found in plant cells & bacteria
Supports & protects cells
Cell Wall
Cell Membrane
• protective layer around all cells
• allows food and oxygen into the cell and waste products out of
the cell.
Cell Wall
Cell Membrane
Cytoplasm
• Gel-like material
• Surrounded by cell membrane
Cell Wall
Cell Membrane
Cytoplasm
Nucleus
• contains instructions for everything cell does;
includes DNA
Cell Wall
Cell Membrane
Cytoplasm
Nucleus
Ribosome
• Each cell contains thousands
• Make proteins
– (Think of it like a battery plant!)
• Found on ER & floating throughout the cell
Cell Wall
Cell Membrane
Cytoplasm
Nucleus
Ribosome
Endoplasmic Reticulum
(ER for Short)
• Moves materials around in cell
– (Like a highway)
• Smooth type: lacks ribosomes
• Rough type : ribosomes embedded in surface
Cell Wall
Cell Membrane
Cytoplasm
Nucleus
Ribosome
ER
Mitochondrion
• releases energy from food
– (Energy Plant)
• Controls level of water and other materials in cell
Cell Wall
Cell Membrane
Cytoplasm
Nucleus
Ribosome
ER
Mitochondrion
Chloroplasts
•
•
•
•
Found only in plant cells.
Contains green chlorophyll
Where photosynthesis takes place
Helps plant cells make food.
Cell Wall
Cell Membrane
Cytoplasm
Nucleus
Ribosome
ER
Mitochondrion
Chloroplasts
Vacuole
• membrane-bound temporary storage spaces
• Contains water solution
• Help plants maintain shape
Cell Wall
Cell Membrane
Cytoplasm
Nucleus
Ribosome
ER
Mitochondrion
Chloroplasts
Vacuoles
Golgi Body
• Protein 'packaging plant'
• Move materials within the cell
• Move materials out of the cell
Cell Wall
Cell Membrane
Cytoplasm
Nucleus
Ribosome
ER
Mitochondrion
Chloroplasts
Vacuoles
Golgi Body
Make a Cell
• Your assignment:
– We will make a model of the cell using the
materials on the table.
– You must use the paper plate as the basis of your
cell.
Bibliography
• http://www.scienceclass.net/PowerPoints/Cell_structure_functio
n.htm
• Glencoe Life Structure Book A