Cells (note, these are notes for Ch. 4 in Modern Biology text)

mobile phones= the basic units of living organisms Van Leeuwenhoek= utilize the simple crystalize microscope (one lens, drilld natural lax) abstruse light microscope (200 years later)= uses a series of lenses to blow up objects in steps, magnifies up to 1500 times. (what we use today) Robert Hooke= designed the early compound microscope (1655); looked at cork; he saw little shapes which looked the like carrels in a fall behind (monastery), he called them cells. Matthias Schleiden= all plants be serene of cells (1830) Theodore Schwann= all physicals argon composed of cells The Cell system: 1. all organisms are composed of one or to a greater extent cell 2. the cell is the basic unit of organization of organisms 3. all cells work out from pre-existing cells electron microscope= uses a beam of electrons rather than light; canful magnify 500,000 times. used to see structures inside of a cell Two Types of Cells: 1.

prokaryotes: cells that pretermit national membrane-bound structures 2. eukaryotes: cells that have internal membrane-bound structures; most plant and animal cells organelles= membrane-bound structures within a cell; little organs nucleus= primordial organelle; manages cellular functions If you want to get a honorable essay, order it on our website: OrderEssay.net

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