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Name___________________________________ Date______________ Block____________________ Cell Structure Basics Guided Notes History & the Cell Theory 1. 1665 - Robert Hooke discovered ____________ will looking at a thin slice of ________. a. Were these cells living? b. What was their shape? c. Why did he use the term "cells"? 2. 1673- Anton van Leeuwenhoek was the first to view __________________ cells. _________. He used a simple, handheld _________________________________ to view organisms _______________________________ and ______________________________________. 3. 1838 - Mathias Schleiden concluded that all _______________ were composed of cells. 4. 1839 – Theodor Schwann concluded that all __________________ tissues are composed of cells. 5. What did Rudolph Virchow observe under the microscope in 1858? 6. What conclusion did Virchow make from this observation? 7. State the 3 parts of the CELL THEORY. a. b. c. Cell Size and Type 1. What must be used to view most cells? 2. ______________, ______________, and ______________ are three basic types of cells. 3. What is the difference between unicellular and multicellular organisms? 4. Which is largest, a plant cell, an animal cell, or a bacterial cell? 5. Cells in multicellular organisms often specialize or DIFFERENTIATE. What does this mean? 1 Name___________________________________ Date______________ Block____________________ Prokaryotes 1. What is a prokaryote and give an example? 2. What do prokaryotes lack? “Pro” rhymes with… 3. Why are prokaryotic cells considered simple? Cell Structure? Reproduction? 4. List the five structures (and functions) found in a PROKARYOTIC (BACTERIA) CELL and diagram them below: Organelle Function 1. 2. 3. 4. 5. 6. 2 Name___________________________________ Date______________ Block____________________ Eukaryotes 1. What do eukaryotes have that prokaryotes don’t? 2. What types of cells are eukaryotes? 3. Are eukaryotes more or less complex than prokaryotes? Can be ____________ or ______________ Can reproduce _____________ or __________ Show great ______________ and _____________ 4. The two main Types of Eukaryotic Cells are _________ and _______ cells. PROKARYOTES Cell Size Cellular Organization Organism Membrane-Bound Organelles Organelles Nucleus Reproduction Cell Division 5. What is an organelle? 3 EUKARYOTES