Biology 1201-Chapter 6-Tour of The Cell

Biology 1201-Chapter 6-Tour of The Cell -...

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Biology 1201   (MWF 11:30-12:30 PM) Chapter 6  A Tour of The Cell Prokaryotes vs. Eukaryotes 6.2.2 “An Overview of The Cell” * Prokaryotic versus Eukaryotic cells. PROKARYOTES EUKARYOTES Single circular chromosome  2 or more linear chromosomes No nucleus or nuclear envelope Nucleus with a nuclear envelope Genetic material in a “nucleoid region” Genetic material within the nucleus No organelles Contains membrane-bound organelles Nucleoid —The area of the prokaryotic cytoplasm where the chromatin (chromosomes  or genetic material) is localized.  The nucleoid is a region of the cell.  Cytoplasm —The contents of the cell other than the nucleus—cytosol, organelles,  vesicles, and the cytoskeleton.  Cytosol —The aqueous part of the cytoplasm, and the amino acids, sugars, proteins,  and nucleotides contained. The cytosol is a solution. Organelle —A specialized structure (subnit) inside the cell that carries out a specific  life process. 
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Plant and Animal Cell Overview: The Basics – 6.2.3 Plasma membrane —The outermost membrane of the cell that protects it from its  environment.  The plasma membrane is composed of double layer lipid molecules. * Compart mental  Organization The Nuclear Envelope: The Initial Tour – 6.2.5 Nuclear Function: Who’s in Charge? – 6.2.6 *The  nucleus  contains the cell’s genetic library. Nucleus —A   dense   organelle   present   in   most   eukaryotic   cells,   typically   a   single  rounded structure bounded by a double membrane, containing the genetic material (DNA  and RNA). The nucleus is responsible for growth and reproduction. Nuclear envelope —Double membrane (lipid bilayer) forming the surface boundary of  a eukaryotic nucleus.  Chromatin —The complex combination of DNA, RNA, and proteins that makes us  chromosomes.  Chromosomes —A threadlike strand of DNA and protein that carries the genes in a  linear order. Nucleolus — A round or oval body in the nucleus of a eukaryotic cell; consists of DNA  and RNA and produces ribosomal RNA.
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*Many cell organelles are connected through the  endomembrane system. Endomembrane   System—
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Biology 1201-Chapter 6-Tour of The Cell -...

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