Chapter 21: Diseases of the Respiratory System Question Type: Multiple Choice 1) The upper respiratory tract consists of the: a) pharynx b) nasal cavity c) primary bronchi d) two of these choices Answer: d Difficulty: Easy Learning Objective 1: LO 21.1 Review the anatomy of the upper and lower respiratory tract as it pertains to microbial defenses. Section Reference 1: Section 21.1 Components of the Respiratory System 2) Middle ear infections are common in children because _____. a) they
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SOCIALLY RESPONSIBLE Telus Corp. Nowadays many successful companies are making corporate social responsibility a key to business. Telus was selected to one of the Top 50 Socially Responsible Corporation in Canada that Maclean’s published in 2011. In response to the 2011 Alberta fires‚ the company provided free wireless calling‚ a stoppage on billing‚ long-distance calling cards‚ replacement cellphones and over 1‚600 comfort kits for relief workers and residents of Slave Lake (Jantzi-Sustainalytics
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viruses. 2. A microbiologist analyzes chemicals obtained from an enveloped RNA virus that infects monkeys. He finds that the viral envelope contains a protein characteristic of monkey cells. Which of the following is the most likely explanation? ( Concept 19.1) Your Answer: | Its presence is a result of the monkey’s immunological response. | | Correct Answer: | The viral envelope forms as the virus leaves the host cell. | | No. This does not explain the presence of either the envelope or
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occur. (Bryan 1999) Listeriosis can invade the central nervous system‚ causing meningitis and/or encephalitis. (Murano 2003) Infected pregnant women usually experience only a mild‚ flu-like illness; however‚ infection during pregnancy can lead to miscarriage‚ infection of the newborn or even stillbirth. (Silver 1998) In general‚ length of antibiotic treatment increases with the severity of the infection. Meningitis is treated for three weeks while brain abscesses are treated for six weeks. (Davis
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first story was about a young boy Tyler from Colorado‚ who got meningococcal meningitis. The symptoms were flu-like at first: high-temperature‚ weakness in the body‚ dehydration‚ etc. But then he got a shortness of breath‚ very low blood pressure‚ rush and eventually blisters on his limbs. Only after running multiple tests for five days that a boy spent on life control doctors finally got the answer. Meningococcal meningitis is an inflammation of the brain and infection of the bloodstream caused by
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organism. B. Viral Structure 1. The virus protein coat‚ or capsid‚ may contain either RNA or DNA‚ but not both. 2. Many viruses‚ such as the influenza virus‚ have a membrane‚ or envelope‚ surrounding the capsid. 3. The envelope consists of proteins‚ lipids‚ and glycoproteins‚ which are proteins with attached carbohydrate molecules. 4. Viruses exist in a variety of shapes‚ from rods‚ spheres‚ polyhedral figures‚ etc. 5. Viruses that infect bacteria are called bacteriophages. C. Viral Reproduction
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Disease in Digestive System Viral Gastroenteritis -is an inflammation of the lining of the stomach‚ small intestine‚ and the large intestine. Several different viruses can cause viral gastroenteritis‚ which is highly contagious and extremely common. It causes millions of cases of diarrhea each year. Anyone can get it and most people recover without any complications‚ unless they become dehydrated. Causes of Viral Gastroenteritis There are four viruses that cause Viral Gastronenteritis namely:
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Germs‚ such as bacteria and viruses sometimes enter the body. When this happens‚ the bacteria or virus attack the body’s cells and begin to multiply. When this happens‚ it is known as an infection which in turn make people ill. Our body uses its immune system to fight of the infection that has began spreading in the body. Vaccines are used to help our immune system develop an immunity by imitating the infection. This means that there is a small amount of the bacteria or virus introduced to the body
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Chapter 18 The Genetics of Viruses and Bacteria Lecture Outline Overview: Microbial Model Systems Viruses and bacteria are the simplest biological systems—microbial models in which scientists find life’s fundamental molecular mechanisms in their most basic‚ accessible forms. Molecular biology was born in the laboratories of microbiologists studying viruses and bacteria. Microbes such as E. coli and its viruses are called model systems because of their use in studies that reveal broad biological
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is contracted‚ it is impossible to eliminate even with assistance from advance modern medicine. In particular‚ human immunodeficiency virus (HIV) and herpes simplex virus (HSV) are notorious for their capability to end a person’s way of life. These viral maladies are noted for differing methods of transmission‚ distinct lack of prominent symptoms‚ and the dissimilar treatments used on patients to ease the symptoms. HIV and HSV are both classified as sexually transmitted diseases‚ yet they are inherently
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