Fascinating Journey through Cell History and Discoveries
Explore the captivating history of cell discovery from Robert Hooke's observations to the groundbreaking Cell Theory. Learn about the pioneers like Anton van Leeuwenhoek, Schleiden, Schwann, and Virchow who shaped our understanding of cells. Delve into the fundamental principles of Cell Theory and the importance of cell diversity in structure and function.
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Presentation Transcript
History tour of the cell . . . .
1. Robert Hooke 1. Robert Hooke 1665 English scientist Observed cork under microscope under microscope 1665 English scientist Observed cork
Cork Activity Cork oak tree
He He said cork consisted of said cork consisted of great many little boxes . many little boxes . great It reminded him of It reminded him of small small rooms in rooms in which monks which monks lived so he named lived so he named them . . . them . . . CELLS
Next . . . 2. Anton van Leeuwenhoek 1674 1st to observe living cells (in pond water) He concluded life seemed to be everywhere.
More important findings 3. 1838 Schleiden: All plants are made up of cells 4. 1839 Schwann (think swan) All animals are made up of cells 5. 1855 Virchow All cells come from pre-existing cells ***then the Cell Theory is born!!!*** ***then the Cell Theory is born!!!***
Video from: http://ed.ted.com/lessons/the-wacky-history-of-cell-theory
Cell Theory Cell Theory 1. All living things are composed of cells 2.Cells are the basic units of structure and function in all living things. frog_croaking_md_wht.gif 3. ALL cells come from preexisting cells. AASV01P03_10
Cell Diversity Structure-to-function Activity
Cell Diversity 1.SHAPE The shape of the cell is based on the function the cell needs to perform. Different types of cells have different shapes.
Red blood cell White blood cell
Cell Diversity 2. SIZE Cells vary in size from macroscopic to microscopic
Size examples Macroscopic cells Microscopic cells What is the largest cell??? The smallest cells = bacteria Ostrich egg
Cell Diversity 3.INTERNAL ORGANIZATION: cells contain organelles to organize their inside material Organelles= tiny organs
prokaryote Eukaryote
Prokaryotes vs. Eukaryotes (see other notes on board)
