PLASMA MEMBRANE SELECTIVE PERMEABILITY= allowing some substance to cross it more easily than others composed of: Phospholipids Proteins Carbohydrates Cholesterol FLUID MOSAIC MODEL Phospholipids are primary lipids(constantly moving‚ fluidly) AMPHIPATHIC-containing hydrophobic and hydrophilic regions Mosaic part=not made of one thing Freeze-fracture studies:way to view what’s inside FLUIDITY OF MEMBRANE Move within bilayer Most of lipids and some proteins‚ drift laterally
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Diffusion‚ Osmosis‚ Active Transport There are two ways in which substances can enter or leave a cell: 1) Passive a) Simple Diffusion b) Facilitated Diffusion c) Osmosis (water only) 2) Active a) Molecules b) Particles Diffusion Diffusion is the net passive movement of particles (atoms‚ ions or molecules) from a region in which they are in higher concentration to regions of lower concentration. It continues until the concentration of substances is uniform throughout. Some major examples of diffusion
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Alexander Kyriakides Professor Jennifer Hyde Writing the Essay 5/2/16 Element of the Crowd The essays of David Foster Wallace are‚ in many ways‚ not about the subjects they pretend to cover. Foster Wallace is not concerned with lobsters‚ high-stake tennis matches or the way that Midwesterners gather around their TV’s. Instead‚ Foster Wallace is interested with what surrounds these subjects and what they have to say about human experience. In this sense‚ the seemingly random topics Foster Wallace
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Consider the Lobster by David Foster Wallace‚ the author describes lobsters in New England in the 1800’s as having an “Unbelievable abundance (238).” These crustaceous creatures were all over the shores of New England. Wallace writes about the Boston seashore as‚ “being littered with lobsters after hard storms… (238).” Yet‚ Lobster were considered “low-class” and as Wallace states‚ “…eaten only by the poor and institutionalized (237).” It was considered unethical to even feed the poor lobster “…more than
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The success of his first restaurant‚ and several more‚ ultimately led Mr. Darden to open a mid-priced seafood restaurant called Red Lobster in Lakeland‚ Fla.‚ in 1968. The restaurant was an instant hit‚ and caught the attention of General Mills in 1970. The Minneapolis-based packaged foods manufacturer bought the company and provided the resources to expand Red Lobster nationwide – helping to create a new segment of the restaurant industry called casual dining. In 1995‚ Darden was spun off from General
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thermoregulation works because if the temperature falls below normal the body will initiate a response such as shivering‚ however as the temperature returns to normal the corrective mechanism will be reduced. Similarily negative feedback also controls Osmoregulation‚ if osmoreceptors detect change in the concentration of the blood‚ for example it may be too high the hormone ADH is released which targets the distal convulated tubule‚ causing it to become more permeable to water so that more is reabsorbed into
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Lewis Carroll’s Criticism of Society Lewis Caroll published ’Alice’s Adventures in Wonderland’‚ in 1865‚ mocking the children’s literature of that time‚ which suffered from a lack of imagination‚ only containing morals to educate children. Education plays a large role in the Alice`s life. Alice refers to her lessons and her education very proud of the learning that she has acquired. The information that she remembers from her lessons is usually useless or wrong. For example‚ although she can
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Animal Biology - Study Guide 2013 Professor: Marty Leonard Room 4060 LSC e-mail: mleonard@dal.ca Below you will find textbook readings and a summary of the lecture material for each of the seven lectures in the Animal Biology unit. I would be pleased if you read through each chapter‚ however‚ I will only test you on the lecture material that corresponds to the sections of the textbook that I indicate below. You will notice that in some of the assigned sections there is material that
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survive economic downturns. In particular‚ the lobster bisque soup has become increasingly popularity‚ but Downey’s efforts to market it have been sporadic. Never did Downey imagine that his lobster bisque would someday be the cause of an international trade dispute. Unbeknown to Downey‚ the Japanese have a strong penchant for lobster. When the Philadelphia office of the Japanese External Trade Organization (Jetro) asked Downey to serve his lobster bisque at a minitrade show in 1991‚ he began to
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Instructor’s Manual Chapter 1 1 Chapter 1 I 1.1 Chapter Outline A Decision Tree Model and Its Analysis • The following concepts are introduced through the use of a simple decision tree example (the Bill Sampras ’ summer job decision): Decision tree Decision node Event node Mutually exclusive and collectively exhaustive set of events Branches and final values Expected Monetary Value (EMV) Optimal decision strategy • Introduction of the folding back or backward induction procedure for
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