Chapter 5 Notes

Jul 8th, 2016
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Lecture Notes generated from the following book: Biology, the Dynamic Science. Russell, Wolfe, Hertz and Starr. 2008. ISBN 978-0-534-24966-3

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Showing Page: 1/84
Good podcast about Eukaryotic cellsWatch this before you run through these slides(and maybe again afterwards)http://www.youtube.com/watch?v=cqzGWgAr4Ww&feature=relatedChapter 55.1 Basic Features ofCell Structure and Function Cells are small and are visualized using amicroscope Cells have a DNA-containing central regionsurrounded by cytoplasm Cells occur in prokaryotic an eukaryotic forms,each with distinctive structures and organizationMicroscopes and Cells Anton van Leeuwenhoek The Father of Microbiology First to observe and describe single celled organisms. Robert Hooke First person to use the word "cell" to identifymicroscopic structures when he was describing cork.Microscopes and CellsFig. 5-1, p. 92Cell Theory: Fundamental to Life1. All organisms are cellular2. Cell: the smallest unit of life3. Cells come only from preexisting cellsExamples of Cellsa. Bacteriumb. Protozoanc. Algaee. Plant cellsd. Animal cellsFig. 5-2, p. 92Units of MeasureFig. 5-3, p. 93Surface to Volume RatiosCells are Small No life is smaller than an intact cell Cells viewed with microscopes Light and electron Magnification and resolution limit microscopesResearch MethodsFig. 5-4, p. 94All Cells Contain DNA All cells have a central region with DNA Stores hereditary information Genes are located on DNA Proteins replicate DNA and copy information to RNACytoplasm Cyt

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