identify an organism from a mixture of two unknown bacterial species. In order to accomplish this‚ I first plated my unknown mixture on Tryptic Soy Agar (TSA)‚ Columbia Naladixic Acid (CNA)‚ and MacConkey’s Agar (MAC) plates. After 48 hours of incubation‚ it was unclear that two different bacterial colonies had grown on my TSA plate. Only one type of colony was evident. However‚ it was apparent that I had successfully isolated two different bacterial species by examining my MAC and CNA plates. Only
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Biology101 McDowall 10/29/2012 Escherichia Coli “The Bacterial Beast” E.coli or binomial name Escherichia coli was discovered by a German pediatrician named Theodore Escherich in 1885. Dr. Escherich originally named the bacteria‚ bacillus communis coli. After the demise of Dr. Escherich the intestinal bacteria was then named Escherichia coli after the late doctor in 1919. The bacteria Escherichia coli are classified as follows. Domain- Bacteria Kingdom- Eubacteria Phylum- Proteobacteria
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Salt is made up of 40 percent sodium and 60 percent of chloride‚ is a very important part of daily lives as it helps maintain your blood’s water content‚ balances acids and bases in your blood‚ and it helps in the movement of electrical charges which are in your nerves throughout your muscles. A human being should consume about 2400 mg of salt daily. On average‚ humans tend to go over the recommended amount. The food industry adds 75 percent of the sodium that we humans consume. The following additives
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Chemistry Salt Analysis Cheatsheet Version 2.0 © 2008 Ankur Banerjee All Rights Reserved. Only important stuff for CBSE Class 12th Chemistry practical syllabus has been included‚ not everything. 2. WE + acidified K2Cr2O7 2 = sol 3 turns green 3. WE + acidified KMnO4 = pink colour of KMnO4 is discharged 4. Sulphide: Colourless gas with a smell of rotten eggs (H2S); turns lead acetate paper black 1. Sodium nitroprusside test: WE + sodium nitroprusside 4 = purple / violet colour 2. Lead acetate
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Cause Bacterial meningitis can become serious even causing death in as little as a couple of hours. Those who are affected by this disease can recover for it. However‚ those who are unfortunate may have permanent disabilities including: hearing loss‚ brain damage‚ learning disabilities‚ etc. caused by the infection. There are a number of bacteria’s that result in meningitis such as: streptococcus pneumoniae‚ group B streptococcus‚ Neisseria meningitides‚ Haemophilus influenza‚ and listeria monocytogenes
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the trans‚ trans-1‚4-diphenyl-1‚3-butadiene‚ which is formed by a Wittig reaction along with the cis‚ trans isomeric diene. The reaction is carried out in two steps. First the Wittig salt is obtained through a simple nucleophilic displacement of chloride ion by triphenylphosphine. When treated with base‚ the Wittig salt forms a ylide which is a carbanion that acts as a nucleophile and adds to the carbonyl group. In this experiment‚ cinnamaldehyde is used as the carbonyl compound and yields mainly the
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substance (typically‚ a corrosive or sour-tasting liquid) that neutralizes alkalis‚ dissolves some metals‚ and turns litmus red. Ionic Dissociation: Dissociation in chemistry and biochemistry is a general process in which ionic compounds (complexes‚ or salts) separate or split into smaller particles‚ ions‚ or radicals‚ usually in a reversible manner. Strength of Acids: The strength of an acid refers to its ability or tendency to lose a proton. There are very few strong acids. A strong acid is one that
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The film “Salt of the Earth” by Michael Wilson is a 1954 film that shows the prejudice ways against long time resident Mexican-American workers. It takes place in a small town in New Mexico. After a mining accident‚ workers began protesting the unfair wages and serious hazardous working conditions. A man by the name of Ramon helps the workers organizing the protest but is also found treating his wife Esperanza unfairly as well and that was a concern because why try and protest about someone being
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Experiment #7: Acids‚ Bases and Salts Mabag‚ Viannery D.‚ Mangune‚ Paolo D. Chem 14.1‚ MAB1‚ Ms. Angelyn del Rosario March 8‚ 2010 I. Abstract The experiment allowed students to explore different electrolytes and classify them into acids‚ bases and salts by using different indicators or by measuring the pH levels of each. The experiment also helped students classify different substances through their conductivity properties. The preparation of a 1 M stock solution from NaOH pellets diluted to a
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Mahatma Gandhi proposed a non-violent march protesting the British Salt Tax‚ continuing Gandhi’s pleas for civil disobedience. The Salt Tax essentially made it illegal to sell or produce salt‚ allowing a complete British monopoly. Since salt is necessary in everyone’s daily diet‚ everyone in India was affected. The Salt Tax made it illegal for workers to freely collect their own salt from the coasts of India‚ making them buy salt they couldn’t really afford. Return to "India under British
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