Cell - Cells The Basic unit of life The Cell The Cell...

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1 The Cell Cells: The Basic unit of life. The Cell Theory: The Three Tenets 1. All living things are composed of cells. 2. The cell is the basic functional unit of life. 3. All cells arise from previously existing cells. Three basic components of all cells 1. Cell Membrane - bo undary be tween i nterior of c ell and external environment. 2. Cytoplasm everything outside the nucleus (if Present) and within the cell membrane. 3. DNA - deoxyribonucleic acid; the hereditary material that contains information to direct cell reproduction and other processes. Prokaryotic and Eukaryotic Cells A Prokaryotic cell has no nucleus or membrane bound organelles (endoplasmic reticulum, mitochondria, plastids, or Golgi bodies). The cells of bacteria and blue-green algae are prokaryotic. A Eukaryotic cell has a distinct nucleus surrounded by a nuclear membrane, as well as a variety of other characteristics (membranous organelles). A Prokaryotic cell
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2 A Eukaryotic cell Organelles of a Typical Animal Cell: A. Nucleus B. Nucleolus C. Chromosomes D. Cell membrane E. Cytoplasm F. Endoplasmic reticulum
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This document was uploaded on 11/01/2011 for the course BSC bsc1005l at FSU.

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Cell - Cells The Basic unit of life The Cell The Cell...

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