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The cell theory has three major principles: • All organisms are made of cells. • All existing cells are produced by other living cells. • The cell is the most basic unit of life. All cells can be divided into two major groups: prokaryotic cells or eukaryotic cells. The main differences between the two kinds of cells are in their structure:
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THE CELL THEORY . 1. All living things are composed of and cell products (e.g. bone, saliva). 2. New cells are formed by the division of pre-existing cells. 3. There are basic similarities in the chemical constituents and metabolic activities of all cells. 4. The activity of an organism , as a whole, is the sum of the activities and
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scientists from the 1600s through the 1800s led to the cell theory, which is a unifying concept of biology. The cell theory has three major principles: • All organisms are made of cells. • All existing cells are produced by other living cells. • The cell is the most basic unit of life.
CELL THEORY The cell theory describes the structural organisaCon of all living things. According to the cell theory: • The cell is the smallest unit of life (unicellular organisms are capable of all seven funcCons of life) • All living things are composed of cells (or their cellular products – such as hair, nails, etc.)
of the cell theory. (c) What are the similarities and differences between light microscopes and electron microscopes? 5. What is meant by in vivo and in vitro experiments? Give an example of each. 6. What factors may limit the size of a cell? 7.What is meant by the term “organelle”? 8. Describe the 2 basic types of cells. 9.
Title: Cell Theory Timeline and Worksheet Author: bhilyer Last modified by: DoughtyC Created Date: 10/21/2020 12:51:00 PM Company: Shelby County Schools
History of the Cell Theory Worksheet. Complete the following table on the scientists that contributed to the discovery of cells and the establishment of the cell theory. Use the History of the Cell Theory reading worksheet to complete this worksheet.
