Microbial Mechanisms of Pathogenicity Mechanisms of Pathogenicity • Pathogenicity: • Virulence: Mechanisms of Pathogenicity Figure 15.9 Portals of Entry • Mucous membranes • Skin • Parenteral route Numbers of Invading Microbes • ID50: Infectious dose for 50% of the test population (animals) • Dose of pathogen that will infect half of the test animals • LD50: Lethal dose (of a toxin) for 50% of the test population (animals) • Dose of toxin that will kill half of the test
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While using public transportation can be a great way to curb traveling expenses‚ it also has several disadvantages that one must remain aware of. These include possible threats to personal safety‚ irregularities in scheduling‚ and the fact that‚ in some communities‚ mass transit has limited coverage and is available for limited hours. Travelers who rely on public transportation should take time to familiarize themselves with the systems available in the various places they visit‚ in order to avoid
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7/6/2011 CELL DIVISION CHAPTER 3: CELL DIVISION 3.1 THE CONCEPT OF CELL DIVISION 3.2 THE CELL CYCLE 3.3 MITOSIS 3.4 MEIOSIS Related to the theory of cells Rudolph virchow ; 1855 stated; „Omnis cellula e cellula‟ Every cell is from a cell or “All new cells are derived from other cells” A cell (daughter cell) is originated from another cell ( ) through . In cell division‚ is inherited from one generation to the next. Involve the distribution of genetic material (DNA) to each daughter
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a) Using a human cell of your choice‚ describe how organelles work together to make and secrete a protein (LO1. AC 1.1) An epithelial cell in the thyroid gland‚ called a thyrocyte forms spherical follicles that produce a protein called thyroglobulin. This is a globular protein that has a functional role in metabolism. The protein is used by the thyroid gland to produce thyroid hormones; thyroxine (T4) is an example of one of the hormones created. Thyroxine is formed by iodine binding to tyrosine
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The tractor symbolizes the agricultural mechanization that has taken place with the growth of Cajun farming and this mechanization’s effect. The arrival of the tractor with the Cajuns shifted the traditional means of local black life. Mechanization reduced the need for labor. The community of blacks who once cared for the land became suddenly unemployed‚ and most of them moved away. While the plantation once was carefully maintained by those who worked it‚ now only the old remain and the plantation’s
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Cell Specialisation All cells are designed to perform a particular job within an organism‚ that is‚ to sustain life. Cells can become specialized to perform a particular function within an organism‚ usually as part of a larger tissue consisting of many of the same cells working together for example muscle cells. The cells combine together for a common purpose. All organisms will contain specialised cells. There are hundreds of types of specialised cells. Below is listed some of the major ones
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You will submit the completed chart and the reflection to your instructor. Human vs.________|# of differences in the amino acid sequence| Rhesus monkey|1| Horse|3| Donkey|3| Common zebra|11| Pig‚ cow‚ sheep|10| Dog|9| Gray whale|10| Rabbit|8| Kangaroo|10| Chicken‚ turkey|12| Penguin|12| Pekin duck|14| Snapping turtle|18| Rattlesnake|22| Bullfrog|26| Tuna|29| Screwfly fly|32| Silkworm moth|36| Tomato horn worm|37| Wheat|37| Rice|38| Baker’s Yeast|42| Candida Yeast|48| Neurospora|50|
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Transport or transportation is the movement of people‚ animals and goods from one location to another. Modes of transport include air‚rail‚ road‚ water‚ cable‚ pipeline‚ and space. The field can be divided into infrastructure‚ vehicles‚ and operations. Transport is important since it enables trade between people‚ which in turn establishes civilizations. Water transport: Water transport is the process of transport watercraft‚ such as a barge‚ boat‚ ship or sailboat over a body of water
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Cell Fusion Introduction: The fusion of cells is a fundamental biological event that is essential for a variety of developmental and homeostatic processes. The importance of cell-cell fusion during development and disease is displayed in a variety of biological processes including‚ but not limited to‚ fertilization‚ development of tissues‚ the immune response‚ and aspects of tissue regeneration due to stem cells (Chen and Olson‚ 2005). Fertilization‚ which is the fusion of sperm and egg‚
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Solutions to the Essay Assignment 1. Various components of a GIS system A GIS can be divided into five components: People‚ Data‚ Hardware‚ Software‚ and Procedures. No one part can run without the other. People: Is the component that actually makes the GIS work. Which include an excess of positions like GIS managers‚ database administrators‚ application specialists e.t.c Data: most time consuming and costly aspect of initiating a GIS is creating a database‚ the operation of GIS depends wholly
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