7-1: life is cellular
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Biology 10TRANSCRIPT
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Unit 3: Cells
Chapter 7: Cell Structure & Function
Ms. PetrucciBiology
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The Discovery of the Cell
The cell was first discovered by Robert Hooke in 1665 using a microscope.
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The Cell Theory
1. ALL LIVING THINGS ARE COMPOSED OF CELLS
2. CELLS ARE THE BASIC UNITS OF STRUCTURE AND FUNCTION IN LIVING THINGS
3. NEW CELLS ARE PRODUCED FROM EXISTING CELLS
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The Key Players:
• Hooke
• Leeuwenhoek
• Schleiden
• Schwann
• Virchow
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Exploring the Cell
• Light Microscopes
• Electron Microscopes– SEM– TEM
• Scanning Probe Microscopes
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Prokaryotes and Eukaryotes
• Pro = Before
• Karyon = Nucleus
• Eu = True
• Commonalities: – SURROUNDED BY A BARRIER CALLED A
CELL MEMBRANE– AT SOME POINT IN THEIR LIFE THEY
CONTAINED DNA
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Prokaryotic cell parts
Prokaryotic cells have
genetic material
that is NOT contained
in a nucleus
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Eukaryotic Cells: Animal Cell
Eukaryotic cells
contain a nucleus in which their
genetic material is separated from the
rest of the cell.
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Eukaryotic Cells: Plant Cells
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Eukaryotic Cells: Plant Cells