Cells - Biology 111, Principles of Biology Lecture Outlines...

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Biology 111, Principles of Biology Lecture Outlines All Living things are composed of cells. The fluid that fills the interior of cells is known as the CYTOPLASM. Two general classes of cells: Prokaryotic: lack internal membrane-bound organelles generally small and structurally simple Eukaryotic: have internal membrane-bound organelles generally larger than prokaryotic cells and structurally more complex Structure of a typical prokaryotic cell (see Figure 6.6): ORGANELLES (structures with specialized functions): Plasma (Cell) Membrane: cell boundary, regulates transport of materials into and out of the cell Nucleoid: bacterial chromosome (DNA) Ribosomes: site of protein synthesis Flagella: used for cell motility (movement) Structure of a typical animal (eukaryotic) cell (see Figure 6.9): Organelles (note that most are bound by a membrane): Nucleus: genetic control center, contains chromosomes (DNA). Surrounded by a double membrane (nuclear membrane). Materials pass between the cytoplasm and the nucleus through nuclear
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This note was uploaded on 04/17/2008 for the course BIOL 111 taught by Professor Lux during the Fall '07 term at Lander.

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Cells - Biology 111, Principles of Biology Lecture Outlines...

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