BIOL 1103 Chapter Notes - Chapter 6: Centriole, Fibronectin, Autophagy
8 Oct 2015
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Document Summary
The cell is the fundamental and most basic unit of life. Cells are studied by using high powered microscopes. Cell fractionation: taking cells apart and separating their major organelles and other subcellular structures from one another done by a centrifuge. Two different kind of cells prokaryotic (bacteria and archaea) and eukaryotic (protists, fungi, plants and animals) Both types of cells have a plasma membrane (selective barrier), cytosol (jellylike containing subcellular components), chromosomes (dna carriers) and ribosomes (protein makers) They differ however in the placement of dna, eukaryotic cells have their dna in the nucleus which is double membrane bound, while a prokaryotic has its dna in a non-membrane region called the nucleoid. Another difference is size with eukaryotic cells having an average size of 10-100 um and prokaryotic cells having an average size of 1-5 um. Contains most of the cell"s dna and is about 5um in length.
