BIO 1151 Chapter 6

BIO 1151 Chapter 6 - BIO 1151 Chapter 6 Microscopes LM-...

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BIO 1151 Chapter 6 Microscopes LM- Light microscope. Passes light through a specimen. Maganafication. Resolution - clarity of the image. Contrast- visble parts of the same sample Staining helps organelles show up SEM- Scanning EM. Produce a 3D image of sample TEM- Transmission EM- Shows the ultrastructure (organelles) of a cell Prokaryotic + Eukaryotic cells Prokaryotic cells No Nucleus or free floating organelles DNA floats inside the cell in the cytoplasm Eukaryotic Cells DNA in nucelus, bound by nuclear envelope Membraner Oganelles Cytoplasm flows between nuclear envelope + plasma membrane Larger the prolaryotic cells Plasma membrane- selective permable membrane made of a double phosoplipids layer Animal Organelles Ribosomes- use info from DNA to make proteins Lysosomes- hydrolized enzymes that digest macromolecules. Recycles cell organelles called autophagy Nucleus- Contians cells genes and is inclosed in an Nuclear Envelope. Envelope has pores to allow DNA + RNA to reach ribosomes
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This note was uploaded on 02/26/2011 for the course BIO 1151 taught by Professor Robinson during the Spring '09 term at College of DuPage.

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BIO 1151 Chapter 6 - BIO 1151 Chapter 6 Microscopes LM-...

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