Transcription of Chapter 3: Cell Structure and Function
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Chapter 3: Cell Structure and FunctionCharacteristics of Living Organisms All living organisms are made up of cells They share the following four processes: Growth:Increase in size Reproduction: Increase in number Responsiveness: React to environment Metabolism: Chemical reactions to provide energy and structures needed to grow, reproduce, and respond to environmentDistinguishing Features of ProkaryoticCells:1. DNA is: Notenclosed within a nuclearmembrane. A singlecircularchromosome. Notassociated with Lackmembrane-enclosed organelles like mitochondria, chloroplasts, Golgi, Cell walls usually contain peptidoglycan, a complex Divide by Features of EukaryoticCells:1. DNA is: Enclosed within a nuclearmembrane.
Prokaryotic Cell Structure I. Structures External to the Cell Wall 3. Axial Filaments (Endoflagella): Bundles of fibers that are anchored at ends of the cell beneath the outer sheath. Spiral around the cells. Have similar structure to flagella. Rotation of endoflagella produces a corkscrew motion.
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