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Microbiology Essay Examples

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Serratia marcescens & Bacillus cereus Report

Introduction The purpose of this study is to differentiate and identify two unknown organisms provided by the instructor in a nutrient broth. It is only known that the two organisms are from vomit; one is gram-positive and the other is gram-negative. It is necessary to first separate the two organisms by inoculating a nutrient agar…

History of disease

In what ways did the understanding of the treatment of disease change in the years 1860-1945? The treatment of disease changed dramatically in the years 1860-1845 due to the changes of how people understand it, how each discovery such as Pasteur’s opens new doors, leading to other discoveries such Koch’s identification of germs, the magic…

Obeserving bacteris and blood

Objectives: There were two major goals of the “Observing Bacteria and Blood” experiment. The first was to establish a familiarity with the proper techniques for using a microscope. The experiment focused on both the basic components of a microscope (i.e. how to adjust the knobs and levers for the desired result) as well as how…

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Antibiotic lab report

Introduction: Only 1% of bacteria are harmful for humans however there are methods of preventing the spread of the harmful bacteria. Chemical substances that are used to either kill or inhibit growth of bacteria are known as antimicrobial agents, of which the three basic types are disinfectants, antiseptics and antibiotics. Disinfectants are chemicals used to…

Ebola Virus: Glycoprotein Modification Study

Abstract Retroviruses are a family of enveloped RNA viruses that are defined by their common characteristics in structure, replication properties and composition. These viruses are important in research in many different areas of science, such as biology, genetics, medicine, cancer, and biotechnology. The process of pseudotyping for retroviruses, in particular, allows researchers to investigate the…

Identifying Bacteria

Bacteria identification is accomplished in a number of ways. Two common tools microbiologists use to identify unknown bacteria include dichotomous key and biochemical tests. The dichotomous key is useful when a microbiologist only needs to know which group an unknown microbe belongs to on a general level. When a microbiologist needs to identify a specific…

Microbiology Study

Chapter 1 – Which one of the following is not a role for bioremediation? Curing infectious diseases – All of the following are examples of new emerging infectious diseases except Chickenpox – Normal microbiota: Beneficial microbial inhabitants of the body – Golden Age of Microbiology: Rapid discovery of basic microbiology principles – Re-emerging diseases: Once…

Role for bioremediation

Chapter 1 – Which one of the following is not a role for bioremediation? Curing infectious diseases – All of the following are examples of new emerging infectious diseases except Chickenpox – Normal microbiota: Beneficial microbial inhabitants of the body – Golden Age of Microbiology: Rapid discovery of basic microbiology principles – Re-emerging diseases: Once…

Microbiology Module

1.) This article was published March-April, 2001. 2.) The two main type are resident flora and transient flora. 3.) Hand hygiene is used to prevent the colonization of transient flora. It includes hand washing and disinfection. Hand washing refers to washing hands with an unmedicated detergent and water or water alone. Its objective is to…

Carbohydrate Fermentation

Fermentation is the production of ATP which occurs in the absence of oxygen. For this experiment, S. cerevisiae as well as S. epidermidis were utilized. My S. cerevisiae experiment was noted to have fermented all three carbohydrates used: glucose(AG), fructose(AG), Mannitol(-). With my experiment of S. cerevisiae: glucose(AG), fructose(AG), mannitol(A) Beyond twenty four hours of…

Streptococcus pyogenes

Nature of Causative Organism Streptococcus pyogenes, a group A streptococci, is a gram-positive, non-spore forming bacteria that can be seen as oval cocci chain forming shapes less than 2 micrometers in diameter under the microscope. It is a facultative anaerobe that can use fermentation for its metabolism. It needs a blood containing medium to grow…

Introduction to Microbiology

Abstract: This experiment is directed to investigate the various physical factors affecting the growth of microbes: temperature, pH of the extracellular environment and the requirement of atmospheric oxygen. Consequently this experiment consists of three parts: 1st part is about investigating the effect of temperature on microbial growth by varying the temperature range: 4oC, 20oC, 37oC…

Salmonella: A Food Borne Illness

As an important health problem in the United States and many European countries, Salmonella can affect you at anytime or any place. But, there are ways to avoid it. You first must know the background and exactly what salmonella is. Salmonella was discovered by a pioneering American Veterinary Scientist named Daniel E. Salmon. He discovered…

Groundwork Preparation for Wet Mounts

Through processes know as wet mounts and simple stains, observing living microorganisms through a compound microscope can generate a clearer understanding of their appearances and movements. Microorganisms are living things that for the most part cannot be seen through the naked eye. They live on and among humans, as well as plants, animals, and all…

Cholera and Ebola

Cholera, aka Asiatic Cholera or epidemic cholera, is an infectious disease of the gastrointestinal tract caused by the Vibrio cholerae bacterium. From the family Vibrionaceae, the bacterium is characterized as a gram-negative rod. As with other gram-negative rods, Vibrio cholerae produces an endotoxin, known as cholera toxin. This bacterium is mobile due to the presence…

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