Cell Structure and Function Chapter 7 EOC Goal 2.
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Transcript of Cell Structure and Function Chapter 7 EOC Goal 2.
![Page 1: Cell Structure and Function Chapter 7 EOC Goal 2.](https://reader034.fdocuments.net/reader034/viewer/2022051516/56649e695503460f94b657eb/html5/thumbnails/1.jpg)
Cell Structure and Function
Chapter 7EOC Goal 2
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Review and Basic Review and Basic InformationInformation
• Cells are the basic unit of living things• Organization of living things:
cells tissues organs systems body
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Important People in Important People in Cell HistoryCell History
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Galileo (1620’s)Galileo (1620’s)
• Given credit as the first person to create a microscope (from a modified telescope)
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Robert Hooke (1665)Robert Hooke (1665)
• Observed cork cells (cork is dead plant matter)
• Named the CELL he said the cell looked like the “cells” in a monestary
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Antony von Leeuwenhoek Antony von Leeuwenhoek (1600’s)(1600’s)
• Observed microscopic organisms with the first true light microscope
• Observed the first bacterial cell (not seen again for over 200 years)
• Observed red blood cells
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What Leeuwenhoek sawWhat Leeuwenhoek sawSpiral Bacteria
Red Blood Cells
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Robert Brown (1833)Robert Brown (1833)
• Botanist• Observed that
plant cells have a dark structure that stains in the middle
• Named the structure he saw the NUCLEUS
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Matthias Schleiden (1838)Matthias Schleiden (1838)
• Botanist• Noticed that
ALL plant tissues are composed of cells
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Theodore Schwann (1839)Theodore Schwann (1839)
• Zoologist• Noticed that all
animal tissues were composed of cells
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Francesco Redi (1700’s)Francesco Redi (1700’s)
• Disproved SPONTANEOUS GENERATION (theory that all living things come from non-living matter)
• Used meat & maggots in his experiment
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Redi’s ExperimentRedi’s Experiment
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Rudolf Virchow (1858)Rudolf Virchow (1858)
• Proposed that ALL cells come from pre-existing cells
• Refuted spontaneous generation
• Proposed BIOGENESIS (living things come from other living things)
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Louis Pasteur (1862)Louis Pasteur (1862)
• Further disproved spontaneous generation using meat broth experiment
• Boiling a substance will kill any living matter (PASTEURIZATION)
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Pasteur’s ExperimentPasteur’s Experiment
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What did we learn from What did we learn from these people?these people?
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THE CELL THEORYTHE CELL THEORY
1. All living things are made of cells (Schwann & Schleiden).
2. All cells arise from pre-existing cells (Virchow, Redi, Pasteur).
3. Cells are the basic unit of structure and function of living things (Schwann & Schleiden).
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Two Basic Types of CellsTwo Basic Types of Cells
• Prokaryotes– Unicellular (made of one cell)– Do NOT have a nucleus– Example: bacteria
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Two Basic Types of CellsTwo Basic Types of Cells
• Eukaryotes– Unicellular and Multicellular
• Multi = many cells
– DO have a nucleus– Examples:
• Plants• Animals• Protists• Fungi