Lab 4:the Cell: Anatomy and Divison

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Lab 4 The Cell: Anatomy and Divison Anatomy of the composite cell 1.Define the following terms: organelle: "small organs"; are the metabolic machinery of the cell, and that are highly organized to carry out specific functions for the cell as a whole. Cell: the structural and functional unit of all living things, is a complete entity. 2.Although cells have differences that reflect their specific functions in the body, what functions do they have in common? Growing, reproducing, and responding to a stimulus are common functioning characteristics amongst all cells. In addition, all cells can maintain their boundaries, metabolize, digest nutrients, and dispose wastes. 3.Identify the following cell parts: Plasma membrane - external boundary of cell; regulates flow of materials into and out of the cell; site of cell signaling Lysosome - contains digestive enzymes of many varieties; "suicide sac' of the cell mitochondria - scattered throughout the cell; major site of ATP synthesis Microvilli - slender extensions of the plasma membrane that increase its surface area Inclusions - stored glycogen granules, crystals, pigments, and so on Golgi apparatus - membranous system consisting of flattened sacs and vesicles; packages protein for export Nucleus - control center of the cell; necessary for cell division and cell life Centrioles - two rod-shaped bodies near the nucleus; direct formation of the mitotic spindle Nucleolus - dense, darkly staining nuclear body; packaging site for ribosomes Microfilaments - contractile elements of the cytoskeleton Rough ER or endroplasmic reticulum - membranous system; involved in intracellular transport of proteins and synthesis of membrane lipids Ribosomes - attached to membrane systems or scattered in the

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