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Cells: The Basic Unit of Life Historical Time Line: Use the timeline on page 170-171 in your book to fill in the columns regarding the history of the cell and its discovery. Early 1600’s 1665 1670-1674 1838 1839 1855 19311970 Cell Theory: 1. Cells are ______________________________________________________ 2. All organisms are _______________________________________________ 3. All cells _______________________________________________________ Prokaryotic Cells: Pro- means “ ____________” karyo- means “ _____________” Characteristics: * They ______ ______ have structures surrounded by membranes. * Most are one-celled organisms called __________________. Eukaryotic Cells: Eu- means “ __________” karyo- means “ ___________________” _________________ Cell ____________________ Cell Characteristics: Characteristics: 1. ________________________ 1. __________________________ 2. ________________________ 2. __________________________ Structures found in Animal Cells but NOT Plant Cells: Structures found in Plant Cells but NOT Animal Cells: 1. ________________________ 1. ________________________ 2. ________________________ 2. ________________________ 3. ________________________ Label the organelles in the animal cell (see page 175 in your book): Label the organelles that are found in a plant cell but NOT in an animal cell (pg. 175).