MICROBIAL SURVEY‚ SMEAR PREPARATION‚ AND SIMPLE STAIN Instructional Objectives 1. Define Roccal = green‚ liquid disinfectant. Pathogen = an agent which causes disease. Wet Mount Slide = a microscope slide of a liquid specimen covered with a cover glass. Yeast = a single celled fungi. Budding = a true characteristic method of asexual reproduction among yeasts where budding of a new cell from a parent cell can be observed. Mold = multicellular masses of filamentous fungal growth. Hyphae
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Quiz #1 (Pay attention to the answer key) Question 1 In the scientific method‚ the condition which is deliberately changed is referred to as the D. experimental variable. Question 2 Which of the following is not a step in the scientific method? D. Scientific Law Question 3 When an organism’s DNA is permanently altered‚ we say that it E. mutates. Question 4 Which answer choice is not a defining characteristic of life? C. disorder
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Chapter 10 Genetic Engineering: * Bioengineering- direct deliberate modification of an organism’s genome. * Biotechnology- use of an organism’s biochemical and metabolic pathways for industrial production. 1. Tools and techniques of genetic engineering * Enzymes for dicing‚ splicing‚ and reversing nucleic acids. * Analysis of DNA. * Restriction endonucleases- recognize specific sequence of DNA and break phosphate-sugar bond. * Liagase- rejoins phosphate-sugar bonds cuts
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Lab Practicum‚ Micro 200‚ study guide When you did your hand wash experiment‚ you decided a variable to test‚ say‚ hot vs cold water‚ you called this variable an “experimental variable” since it was the variable you were testing experimentally. In order to get meaningful data‚ you need to keep other things the same‚ for example the washing time had to be the same for both‚ you called the washing time a _Control_______ variable. Through the semester‚ you have used two bacteria that produce
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Europe had suffered one of the worst natural mishaps the world had ever seen. From the wings of Italy through to Ireland‚ its inhabitants had lost their last strand of hope as a plethora of violent behavior and barbarism had befallen upon them. While morality deteriorated and respect for human life seemed impracticable‚ the people of these times were being threatened to their extinction. Their hope in God grew weary as the living learned to expect not the graceful hand of the God they knew‚ but rather
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health of the soil‚ organic farmers rotate their crops (Alvarez). Instead of using pesticides or insecticides‚ organic farmers use helpful birds‚ insects‚ and organic fungicides to decrease disease and pests. Organic fungicides such as Bacillus subtilis‚ Bacillus pumilus‚ and Trichoderma harzianum are effectively used to prevent diseases that affect the roots (Murray). Conventional farmers use pesticides to protect the crops from disease‚ mold‚ and insects. Chemical fertilizers are used in conventional
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ragged edges (Alfa 2005). Due to the presence of H. ducreyi in the body‚ the immune system signals lymphocytes‚ macrophages‚ and granulocytes‚ which in turn causes inflammation. Inflammation causes regional lymphadenitis in the sexually transmitted bacillus Chancroid (Rapini et al‚ 2007). H.
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Life on earth could not exist without bacteria because bacteria make possible many of the essential functions of ecosystems‚ including the production of antibiotics. Soil bacteria can be rod (bacilli)‚ cocci (spherical)‚ spirilla (spirals)‚ of these bacillus are more numerous than the others. Secondary metabolites are organic compounds derived from the modification of primary metabolite synthases of bacteria. They do not play a role in growth‚ development‚ and reproduction like primary metabolites do
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also cause deadly poisoning. Most cases are caused by common bacteria (see Jonathan’s speech) like Staphylococcus or E. coli. The main evil ones are Staph Aureus‚ E. coli enteritis‚ salmonella‚ shigella‚ campy lobacter‚ cholera‚ botulism‚ listeria‚ bacillus cereus and yersina (gee‚ funny names!). Kids (like me) and the elderly‚ (like Mr. Bark)‚ and people with diabetes‚ heart disorders or kidney disease‚ have a much higher chance of having deadly symptoms from bacteria in our food. In places like Africa
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F.tularensis‚ the causative agent of tularemia‚ is a small‚ aerobic nonmotile‚ gram-negative cocco-bacillus. Tularemia also known as rabbit fever and deer fly fever is a zoonotic disease that humans typically acquire after skin or mucous membrane contact with tissues or body fluids of infected animals‚ or from bites of infected ticks (Pal‚2007). Tularemia was recognized in Japan in the early 1800’s and in Russia in 1926. Tularemia as a biological weapon is the difficulty in culturing and growing
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