Cell Theory

2011-09-10 cellular phone Theory The cell is the smallest structural and available living(a) unit 3 Cells: The Living Units: Part A organismic functions depend on respective(prenominal) and collective cell functions Biochemical activities of cells be dictated by their specific subcellular structures Continuity of life has a cellular basis Cell Diversity Over two hundred protestent types of human cells Types differ in size, shape, subcellular components, and functions Generalized Cell all(prenominal) cells have slightly common structures and functions Human cells have iii basic fictional character: Plasma membrane conciliative outer(a) boundary cytolintracellular gas containing organelles Nucleuscontrol concentre 1 2011-09-10 Plasma tissue horizontal fold Bimolecular layer of lipids and proteins in a constantly changing placid mosaic Plays a dynamic role in cellular natural process Separates intracellular fluid (ICF) from extracellular fluid (ECF) Interstitial fluid (IF) = ECF that surrounds cells tissue layer Lipids 75% phospholipids (lipid bilayer) phosphate heads: gelid and hydrophilic Fatty acid tails: nonionised and hydrophobic (Review Fig. 2.

16b) 5% glycolipids Lipids with polar sugar groups on outer membrane surface 20% cholesterol Increases membrane stability and fluidness Lipid dozens ~ 20% of the outer membrane surface Contain phospholipids, sphingolipids, and cholesterol May function as unchangeable platforms for cellsignaling molecules Membrane Proteins intrinsic proteins Firmly inserted into the membrane (most are transmembrane) Functions: transpose p roteins (channels and carriers), enzymes, or! receptors 2 2011-09-10 Membrane Proteins Peripheral proteins Loosely devoted to integral proteins Include filaments on intracellular surface and glycoproteins on extracellular surface Functions: Enzymes, tug proteins, cell-to-cell links, provide support on intracellular surface, and form part of glycocalyx Functions of Membrane...If you want to get a full essay, order it on our website: OrderEssay.net

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