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Download Packet 2: Cell Structure and Function 2-1 Aim
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Packet 2: Cell Structure and Function 2-1 Aim Introduction to Cells (A) CELL THEORY o The cell theory is a fundamental concept in biology that summarizes many discoveries made by scientists regarding cells o It states that: 1. All living things are made up of cells. 2. Cells are the basic unit of structure and function in living things. 3. New cells come only from pre-existing cells. (B) PROKARYOTIC VS. EUKARYOTIC o Cells fall into two main groups, based on whether they have a nucleus. o A nucleus is the command center for the cell. It contains the DNA and controls all functions of the cell. PROKARYOTIC CELLS Cell Membrane Yes EUKARYOTIC CELLS Yes Nucleus No Yes Cell Size Small Large Complexity Simple Complex Example Bacteria Muscle Cell