View of the Cell.

Chapter 7: A View Of The cadrephone Ch. 7.1 The Discovery of st onlys The History of the Cell Theory- Before microscopes disease thought to perplex from supernatural inwardness Cells- the basic unit of living organisms Development of light microscopes- wide-eyed microscopes vs. compound Compound light microscopes- a series of lenses to blow up objects in steps, overdraw up to 1,500 times The Cell Theory- Anton avant-garde Leeuwenhoek- depression person to record looking at pee under a microscope. Robert Hooke- viewed cork, gave us the name cellphones Matthias Schleiden- concluded that all plants ar still of cells Theodore Schwann- concluded that all animals are composed of cells 1. either organisms are composed of one or to a greater extent cells 2. The cell is the basic unit of organization of organisms 3. All cells come from preexisting cells Development of electron microscopes negatron microscopes- uses a get off of electrons instead of light to magnify structu res up to 500,000times 1. Scanning electron Microscope (SEM)- scans the get along to show 3D surface images 2. Transmission Electron Microscope (TEM)- allows us to see inner cells 3. Scanning Tunneling Microscope (STM)- investigates atoms on the surface of a molecule 4.

Staining, other techniques for contrast Two original Cell Types- - Prokaryotes- organisms do of cells that lack membrane margin organelles - Eukaryotes- organisms do of cells with membrane demarcation organelles, multicellular plants & animals - Organelles- membrane bound structures with in a eukaryotic cell * Membrane separates chemical s ubstance reactions * Robert Brown- spy nucl! eus * Rudolf Virchow- determined nucleus is structure responsible for cell division * Nucleus- key membrane-bound organelle that manages cellular functions Ch. 7.2 The plasma Membrane Provides a barrier amongst the internal components of a cell and its external environment. Maintaining a Balance- Survival depends on the cells ability to deem the proper conditions within itself. If you want to grab a undecomposed essay, order it on our website: BestEssayCheap.com

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