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.

Prokaryotic Cell Structure II. The Cell Wall General Characteristics: Semirigid structure that lies outside the cell membrane in almost all bacteria. Two major functions: 1. Maintains characteristic shape of cell. 2. Prevents the cell from bursting when fluids flow into the cell by osmosis. Contributes to bacterial ability to cause disease.

  Structure, Functions, Membrane, Structure and function