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Cells (Functions (ridding wastes, obtain oxygen, obtaining food, growing),…
Cells
Meaning
basic units of organisms
Size of Cells
Cannot see with eye
Must use microscope
Examples
Blood cell =7 micrometers
1cm of skin =100,000 cells
measured in micrometers
Millionth of meter
Functions
ridding wastes
obtain oxygen
obtaining
food
growing
MulticellularVs. Unicellular
Multicellular
Make up organisms with more than one cell
Organization
Cells
Tissues
Organs
Organ Systems
Organism
Unicellular
Only one cell
Make up organisms with only one cell
The Cell Theory
Theodore Schwann
Base of living organisms
Organism consist at least one cell
Cells come from other cells
Actvivty is based on cell
Energy flows
Contains hereditary
information
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Same chemical composition
Matthias Jakob Schleiden
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Rudolf Virchow
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