Abstract The primary focus of this lab was on microscopy and simple stains. Crystal violet and Carbol fuchsine‚ simple staining components‚ were used to stain the slide in order to see the different microbes in order to determine their cellular shape and identify unknown ones by comparing. Introduction Bacterial cells are usually colorless because cytoplasm‚ for the most part‚ is transparent. Since the bacteria are colorless‚ it is almost essential to add a stain to make the bacteria more visible
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Lab Practical 2 Morphological Staining Techniques Simple Stain- Uses 1 Stain 1. Acid Stains (- Charge)- Stains Background- Nigrosin‚ India Ink and Congo Red 2. Base Stains (+ Charge)- Stains Cell- Methylene Blue‚ Crystal Violet‚ Safranin Differential Staining Techniques- Any Staining Technique using 2 or more stains is differential. It allows us to differentiate between parts. 1. Gram Stain- Two Stains‚ PLUS Reagents- Distinguishes Chemical Composition of Cell Wall PG only (+ Purple)
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What is Food Microbiology Food microbiology is the study of food micro-organisms; how we can identify and culture them‚ how they live‚ how some infect and cause disease and how we can make use of their activities. Microbes are single-cell organisms so tiny that millions can fit into the eye of a needle. They are the oldest form of life on earth. Microbe fossils date back more than 3.5 billion years to a time when the Earth was covered with oceans that regularly reached the boiling point‚ hundreds
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most of them do have one attached to its head structure. It is a hollow tube through which the nucleic acid passes through when the bacteriophage infects a host cell. http://www.biologyonline.org/dictionary/Bacteriophage http://www.britannica.com/EBchecked/topic/48324/bacteriophage
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Krupa Patel Midterm Assignment Microbiologist and Nobel Prize winner Joshua Lederberg first coined the phrase “emerging infectious diseases” to describe infections that were newly appearing in a population or having existed but rapidly increasing in incidence or geographic range.1 Emerging diseases can be attributed to either true emergence (i.e. a newly appearing pathogen that has not been present)‚ increased recognition (i.e. a pathogen that was present in a population but has only recently
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Bacteria are unicellular and ultra-microscopic organisms‚ yet they play an important role in nature. They are of tremendous importance to man. They play an important role in agriculture and medicine and are the basis of many industries. Some are beneficial to man directly or indirectly‚ others are very harmful as they cause various plant and animal diseases. Bacteria are considered as our friends and foes due to their beneficial and harmful activities. Their economic importance can be studied under
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BTN 211 TOTORIAL 1 Chapter 1 1. The History and Scope of Microbiology Which of the following distinguish the field of microbiology from other fields of biology? a. the size of the organism studied b. the techniques used to study organisms regardless of their size c. both the size of the organism studied and the techniques employed in the study of organisms d. neither the size of the organism studied nor the techniques employed in the study of organisms regardless of their size Who of
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Running Head: FOOD BORNE ILLNESS 1 Food Borne Illness Marcus Foster SCI/163 September‚ 04 2014 FOOD BORNE ILLNESS 2 The Food Borne Illness Salmonella is a type of food poisoning that is borne from the salmonella bacterium. There are many types of these bacteria‚ but the most common in the United States are Typhimurium and Enteritidis. Eating foods that are contaminated
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Science Timeline In the early 1860’s the French beverage industry was thriving. Pasteur was called upon to tackle some of the problems that were plaguing the industry. The special concern was the spoiling of wine and beer‚ which caused great economic loss and tarnished France’s reputation for fine vintage wines. He noticed that when aged properly‚ the liquid contained little yeast cells. But when the wine turned sour‚ he was a proliferation of bacterial cells which were producing lactic acid
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is the largest outbreak of ebola ever recorded. The first documented infected area started in Guinea and now has spread from “Guinea to Sierra Leone‚ Liberia‚ Nigeria and Senegal and killed more than 2‚000 people” (ABC) This is a strikingly scary topic in the news today due to the virus’s rapid infection rate and lack of a cure. “ABC World News‚” and “The Guardian” both inform us of current infection rate statistics documented by the WHO (World Health Organization) and what countries are currently
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