MasteringBiology Ch. Google Chrome Secure https session masteringbi.pdf

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MasteringBiology: Ch. Google Chrome Secure https: session masteringbiology.com/myct/itemView?assignmentProbleml BIOL 3215 Cell Biology Spring 2017 Ch 15 Chapter 15, Question 3 basolateral surface The is a carbohydrate-rich zone juxtaposed between the plasma membrane and the lgSFs of many types of animal cells. cadherins These are transmembrane proteins that serve as receptors for ECM proteins such as collagen, fibronectins fibronectin, and laminin; is the best-characterized ECM The groups mediate cell-cell recognition and adhesion the two groups of proteins can be distinguished elastin from each other functionally because of the calcium requirement of but not integrin apical surface is the surfaces of intestinal epithelial cells that face the lumen of the intestine. selectin is the surfaces of intestinal epithelial cells that face the circulatory system. collagen occur widely throughout supporting tissues and body fluids, whereas laminins U are found mainly in the basal laminae. glycocalyx is responsible for the strength of the ECM, whereas imparts elasticity and flexibility to the ECM. Submit My Answers Gve Ask me anything previous l 8 of 9 l next x Provide Feedback Continue 54 PM 1/25/2017 Solution 1. glyco calxy, ECM 2. Fibronectin is the best characterized integrin. 3.cadherins and integrins 4.Apical surface is the surface of the intestine that face the lumen of the intestine , basal surface is the surface is the surfaces that face the circulatory system. 6.collagen is responsible for the strength of the ECM while elastin imparts elasticity and flexibility to the ECM..

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Cell, in biology, the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete organism in itself, such as a bacterium or yeast. Other cells acquire specialized functions as they mature. These cells cooperate with other specialized cells and become the building blocks of large multicellular organisms, such as humans and other animals. Although cells are much larger than atoms, they are still very small. The smallest known cells are a group of tiny bacteria called mycoplasmas; some of these single-celled organisms are spheres as small as 0.2 μm in diameter (1μm = about 0.000039 inch), with a total mass of 10−14 gram—equal to that of 8,000,000,000 hydrogen atoms. Cells of humans typically have a mass 400,000 times larger than the mass of a single mycoplasma bacterium, but even human cells are only about 20 μm across. It would require a sheet of about 10,000 human cells to cover the head of a pin, and each human organism is composed of more than 30,000,000,000,000 cells. similarities and differences between cells similarities and differences between cells Basic similarities between cells and ways cells may vary depending on their function. See all videos for this article This article discusses the cell both as an individual unit and as a contributing part of a larger organism. As an individual unit, the cell is capable of metabolizing its own nutrients, synthesizing many types of molecules, providing its own energy, and replicating itself in order to produce succeeding generations. It can be viewed as an enclosed vessel, within which innumerable chemical reactions take place simultaneously. These reactions are under very precise control so that they contribute to the life and procreation of the cell. In a multicellular organism, cells become specialized to perform different functions through the process of differentiation. In order to do this, each cell keeps in constant communication with its neighbours. As it receives nutrients from and expels wastes into its surroundings, it adheres to and cooperates with other cells. Cooperative assemblies of similar cells form tissues, and a cooperation between tissues in turn forms organs, which carry out the functions necessary to sustain the life of an organism.

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