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2A Elevate Science

Topic 2 Cell Systems Lesson 1 Structure and Functions of Cells

QuestionAnswer
What is the definition of "structure"? what it is made of; what the parts are
What are the functions of cells? to obtain energy; to bring in nutrients and water; to get rid of toxins
The Cell Theory- What did scientists discover? In the 1600's, scientists discovered that living things are made of cells
The Cell Theory- What made the discovery possible? the microscope
What led scientists to the Cell Theory? New discoveries about cells
Who was Robert Hooke? he looked at Cork Oak Trees; he found "tiny rooms" and called them cells (dead cells)
Who was Anton Van Leeuwenhoek? he observed living cells swimming; animalcules
Who were Schleiden and Schwann? They developed the Cell Theory
What were the principles of the Cell Theory? all living things are made of cells; cells are the basic unit of structure and function in living things; all new cells are produced from existing cells
What is a light microscope? focus light through lenses to produce an image
What is an electron microscope? it uses beams of electrons that can scan the surface of a specimen
Explain magnification. it uses the objective lens (4X, 10X, 40X0 X the eyepiece (10X)
What is resolution? it is how detailed an image is; the higher magnification provides a greater resolution
Created by: carlsond
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