1320 HBL for CP2078 (Sample Preparation for Microscopy) Name of students Admission No Class Total Marks / 45 Assignment 1 1. Explain the principle of positive staining. (3 marks) Positive staining is done by staining the cell walls of Gram-positive bacteria with crystal violet. The cell wall of Gram-positive bacteria is made up of a thick layer of peptidoglycan which undergoes dehydration during decolourisation causing the pores to shrink
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Directions: Read the article‚ “A Summary of Health Outcomes: Multistate Foodborne Disease Outbreaks in the U.S.‚ 1998-2007‚” and answer the questions below. • Answers must be complete sentences. • The assignment must be typed and submitted on Tuesday‚ February 19th prior to the exam. 1. What is a multistate FBDO? Multistate FBDO is a outbreaks that either spread to other states or originate from the same vector in multiple states at the same time.
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The second factor to influence the microbiota is whether the infant is fed with breast milk or formula. (1‚ 6) Breast milk results in microbiota dominated by bifidobacteria whereas formula results in higher amounts of Escherichia coli (E. coli)‚ Clostridium difficile (C. difficile)‚ Bacteroides fragilis (B. fragilis) and lactobacilli.
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such as Ebola that directly attacks the immune systems. This virus has an average of 50% fatality rate. As of 13 January 2016‚ reportedly 11‚315 has died from Ebola. Moreover‚ we also have many contagious antibiotics resistant bacteria such as Clostridium difficile‚ shortened to C. diff‚ a deadly bacterium that multiplies when an antibiotic used which kills off beneficial bacteria that reside in its traditional habitat‚ the gut. The Centers for Disease Control and Prevention in America has estimated
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unexplained muscle aches and ways to pains. Natural detox programs are the best way to go when to following this type of regime to help get your body back into feeling great. In fact you may not even know just how tired and run down you really are from the toxins that you come in contact every day from the food you eat to even the very air. Natural detox programs are gentler on the system than the purges and fasting detoxifications. The difference is that natural detox programs are designed provide you with
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Pertussis‚ also known as whooping cough‚ is a highly contagious respiratory tract infection of humans that is caused by a gram-negative bacterial pathogen Bordetella pertussis. These bacteria bind to ciliated cells that line the respiratory tract by obstructing their ciliary movement and killing the cells. B. pertussis can be transmitted from one person to another through respiratory droplets such as coughing‚ sneezing‚ or sharing a breathing space. B.pertussis host range can be found only in humans
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Some say that water pollution is not a problem‚ and that it doesn’t threaten or even affect human life on earth. It is said that the earth will just absorb all of the pollution‚ and we will no longer have to worry about it. Pollution does not just disappear. However‚ the toxins in the water are absorbed‚ but they don’t go away. An effect of this is acid rain‚ which will be explained later. The more contamination the earth sucks up‚ will only increase global warming because the viruses will only live in the earths crust
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lung cancer and Chronic Obstructive Pulmonary Disease (COPD). The effects of smoking are not limited to those who smoke firsthand; it inflicts harm on those around them as well. Second-hand smoke also causes very serious problems and because of the toxins inhaled by common people it can be just as bad as smoking. Banning smoking on college campuses can decrease these risks and resolve many health issues which are directly caused by smoking. According to The American Nonsmokers Rights Foundation‚ there
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nematocysts release a toxin(4) into anything that they come into contact with. The gastrozooids then attach to the dead/stunned victim‚ and spread over it. They digest it‚ and transfer food to the rest of the man-of-war. Last‚ the gonozooids create other polyps. The means by which the man-of-war reproduces‚ however‚ is not yet understood. The fish Nomeus gronvii lives among the tentacles of the man-of-war. This fish‚ which is eight centimeters long‚ is mostly immune to the man-of-war ’s toxin. It will eat
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but it can be a benefit to undergoing detox. The greatest benefit of a body detox is that it does what it is supposed to do. That is eliminating stored toxins and waste from your body. These toxins enter our body through water‚ food‚ and the environment. Although a small buildup is not uncommon‚ a large one can hurt your body. When these toxins are expelled through bowel movements‚ urination‚ and sweat‚ you will notice a significant improvement in your health. Many report an increase in energy
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