lolInvestigating the Effects of Antibiotics on E-coli Investigating the Effects of Antibiotics on E-coli The antibiotic that was the most effective was Streptomycin. This was due to Streptomycin being an antibiotic that works on gram negative bacteria. Gram-negative bacteria are bacteria that do not retain crystal violet dye in the Gram staining protocol whereas Gram-positive bacteria are those that are stained dark blue or violet by Gram staining. The bacteria we used were E-coli that are a
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Antimicrobial Properties of Plants A plant with antimicrobial properties means that it destroys or inhibits the growth of bacteria and fungi. Aim: our aim was to see weather or not garlic‚ mint and grass contained antimicrobial properties and if they did how effective they were we were trying to see weather the bacteria will grow around the different plants. Control Test: As a control test what we did was‚ we dipped a paper disc into the alcohol solution we used to dissolve the plants; the
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Monophasic Salmonella Typhimurium - Efficacy of vaccine administration Since mid- 1990´s a number of reports have been published on the isolation of different Salmonella strains‚ similar to S. Typhimurium but a difference in the flagella antigen‚ in several European countries as well as in the U.S.A (EFSA Journal 2010‚ Andrea et al. 2008). As known‚ serotyping of Salmonellas is based on antigenic variability of LPS (O Antigen)‚ flagella (H antigen) and capsule (VI antigen). Most Salmonella strains
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Scientist Louis Pasteur’s work not only saved but also protects millions of people from disease every day. His scientific achievements sparked the early development of the food safety industry. His most noted achievement was the birth of germ theory. Initially‚ Pasteur was asked to examine why alcohol becomes contaminated during fermentation. According to his research Pasteur stated that bacterial organism were responsible for souring the alcohol. This discovery evoked him to look into finding where
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Osmosis in Red Onion Cells By: Youssef Gharib Brief Description of Osmosis in Red Onion cells: Osmosis is the diffusion of water from an area of low concentration to an area of high concentration across a semi-permeable membrane. The purpose of this lab is to compare the three different types of solutions affect on the relative size of the vacuole to the cell‚ the outer membrane of onion red cells (tunics) are used to figure out the different types. In the red onion you can see effects promptly
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Lecture 2- overview of the virus 1. The first step- the virus binds to a receptor-->entry and uncoating--> early gene expression-->replication of viral genome-->late gene expression->assembly of viral progeny-->exit 2. Concept 2.1- Virus entry is a multistep process with the ultimate goal of delivering viral genome (payload) into the cells. A. Binding to surface receptors- - a viral receptor is cell surface molecule‚ likely a transmembrane protein - a virus may need multiple receptors
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Biology Virus Essay A virus is a microorganism that cannot reproduce without a host. As a result of this‚ there has been a lot of controversy on whether or not a virus is a living or non-living organism. The dictionary.com definition for life is‚ “the condition that distinguishes organisms from inorganic objects and dead organisms‚ being manifested by growth through metabolism‚ reproduction‚ and the power of adaptation to environment through changes originating internally.” Viruses have characteristics
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The food borne illness I have chosen is salmonella. Question 1: What is the infectious agent (pathogen) that causes this infectious disease? The infectious agent (pathogen) that causes salmonella is called salmonella enteriditis. The bacteria is larger than a virus; but‚ is visible to the eye with the microscope. It is rod-shaped‚ gram negative‚ non-motile bacteria that does not form spores. Interestingly enough it communicates to its fellow bacteria via AHL. It infects the cell‚ multiplies
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Whitley Acre Mrs. Hill Honors English 9 26 January 2012 Outbreak: The Ebola Virus in Sudan‚ Zaire‚ and Uganda By killing ninety percent of its victims‚ Ebola is one of the most effective viruses known to man. This virus does not have any specific requirements for its host‚ it simply attaches itself to a species and does as much damage as possible. Ebola is extremely contagious; it is practically unstoppable‚ incurable‚ and unpreventable. The ease of transfer between species makes detection
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Anthrax is an infectious disease and it is caused by Bacillus anthracis. It is also called Splenic Fever‚ or Charbon. There are three types of Anthrax‚ there is cutaneous (anthrax of the skin‚) inhalation anthrax‚ and gastrointestinal anthrax. Anthrax is a large‚ rod shaped bacterium. It mostly affects animals but also can be transmitted to humans. Anthrax’s first incident was in 1500 B.C. in the early writings of Mesopotamia and the Book of Genesis. The Old Testament description of the 5th
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