the bacteria Clostridium botulinum and Clostridium perfringens cause such severe food poisonings that commonly result in death. You are given a food sample that might contain these bacteria. name the staining procedure you would conduct, the dyes used, and describe what you would see on the slide you prepare if one of these species were present.
Malachite green method;
Clostridium spores stained with malachite green dye. The endospors of clostridium when stained with malachite green they appear as green spheres while the bacilli themselves turn purple in colour on slide if they are present in the food sample.
the bacteria Clostridium botulinum and Clostridium perfringens cause such severe food poisonings that commonly result in...
You want to diagnose if a patient has tuberculosis. A sputum sample (a respiratory tract sample taken when a person coughs) is given to you. Based on the staining procedures you conducted in lab during week 2, name the staining procedure you would conduct, the dyes used, and describe what you would see on the slide you prepare. Why is this considered a differential procedure?
Food Microbiology Purpose To utilize the process of fermentation to make yogurt To describe organisms responsible for food borne illnesses and summarize a recent outbreak Introduction Microorganisms have been used for centuries for food preservation and to improve or change its taste. Evidence exists that yogurt, which is milk fermented by bacteria, has been around for over 4000 years. Today, many of the foods we eat are the result of microorganisms acting on foods for a specific and desired effect....
1887, Barnes, a physician living in Carlilse, Cumberland NW England reports on a case of food poisoning at a wedding breakfast. “It has long been known that certain kinds of animal food are liable to undergo some change which deprives them of their wholesome and nutritive properties, and converts them into virulent irritant poisons” The case After the ceremony in Carlisle, England the wedding party were served “breakfast” at the house of the bride’s aunt and uncle at 11.30 am...
Jack was thankful he had declined the offer of spicy Mexican food with his coworkers. The pain was worse, burning from his navel to his breastbone. It always peaked at night and when he was hungry. “It's just the stress from work,” Jack told himself. Jack chewed up a handful of Tums, and made toast and tea for his late dinner. Despite the antacids and bland meal, Jack's gastric distress intensified. Two hours later, Jack vomited and was terrified to...
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LAB EXERCISE #6: Kirby-Bauer Disk Diffusion Test for Antibiotie Sensitivity Determination The Kirby Bauer Test is an agar diffusion test that is used to determine the effectiveness of antibiotics killing various species of bacteria. Filter paper disks saturated with the antibiotic of interest are placed a Mueller-Hinton agar plate on which bacteria that has been isolated from a clinical sample has been sarcad. The antibiotic then diffuses from the disk...
Hi, I need help please! What method of research can we assume Salk and Sabin used to acquire their vaccines? (Points : 4) Socratic Method Illustrative Method Visual Method Philosophical Method Scientific Method (TCO 9) Cat fecal matter is one possible source for getting infected with _____, which invades the _____ system of humans. (Points : 4) Chagas’ disease; circulatory African sleeping sickness; nervous Western sleeping sickness; circulatory toxoplasmosis; lymph ...
microbiology help
TOT Zoo Add Page Insert Table Chart Text Shape Media Comment These questions will serve in lieu of a lab report for Exercise 15, 16, and 17 You will find the answer to these questions in the background, procedure, results and interpretation sections of manual Exercise 15, 16, and 17, videos, Actions of Selective and Differential Media Chart, and the Principle/Theory article in homework section.) General Questions 1. What is the purpose (function) of selective media? (How does...
BACKGROUND:
Mycobacterium tuberculosis causes tuberculosis, one of the world’s
deadliest diseases. It is an acid-fast bacillus that is 2-4 um in
length and 0.2-0.5 um in width.
How many weeks, days,& hours would it take to see a
M.tuberculosis colony on solid media? Its generation time is listed
in the reading (above). Assume that bacterial colonies are not
visible to the naked eye unless they contain ≥ 2 millioncells. This
species forms aggregates of 5 cells on average. Show your...
69. THE ENDOSPORE itself is might to stain_?_ color in an ACID FAST stain. (a) HOT pink (c) purple (d) green (e) baby-blue 70. All STAINS begin with a properly prepared _?_ . (a) dye (b) slide (c) smear (d) dog (e) cat 71. Which of the following is an ENDOTOXIN found in some microbes? This is results in fever, blood vessel dilation and possibly SHOCK when it is released into the human blood stream? (a) the plasma membrane (b)...
100. Flare is: (a) the widest frequency of light that can enter an objective (b) the bending of light as it passes through different substances (c) wavelength/2NA (d) when the beam of light "spreads" wider than the objective's "hole" (e) wavelengths of light too short to enter the objective 101. Coccobacillus shaped bacteria are considered to be_?_ (a) cocci (b) bacilli (c) diplobacilli (d) diplococci (e)answers a and b only 102. This microscope is used for cheap and quick "'diagnosis"...