taking parts of a DNA of things like insects and bacteria into our food supply‚ the quality of that food can increase. This information is significant as it explains what the process of genetic engineering is‚ and how it is involved in our life. Bacillus thuringiensis‚ “…better known as B.T‚ is a natural occluding bacterium that can be found in most natural soil samples. Organic farmers have used it for years as an insect spray because when B.T exists outside the plant it is soon broken down by the
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Bacteria which stain purple are called Gram-positive while stained pink colour are called gram negative bacteria. From the results‚ purple stained are obtained for E.coli and S.aurues . E.coli is a rod shaped bacteria‚ therefore it described as bacillus. S.aureus has irregular grapelike clusters‚ therefore is it coccus bacteria. Through this experiment‚ purple stained obtained for both bacteria‚ E.coli and S.aureus. But compared to same experiment carried out by others‚ E.coli should be pink stained
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Microorganisms are tiny‚ small living things which can not be seen with eyes. They spread everywhere around the world. Most people think that microorganisms are harmful to the environment. Humans exploit these small living things hundreds of years ago. Science has developed and scientists have established new science related to microorganisms‚ it is called microbiology. In this essay‚ I will talk about one of the oldest and most widespread microorganisms in our planet‚ bacteria. Bacteria lives everywhere
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Tuberculosis [pic] Salena Nowak Physiology 22 Dr. Jennifer Gray April 15‚ 2008 Abstract Tuberculosis (TB) is an acute infectious disease. It is found primarily in the lungs‚ but is also seen in any tissue of the body. This disease has infected more than one third of the world’s population. Most cases are seen in African and European countries. Tuberculosis has killed more people than any other disease in history. Robert Koch was the person who
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Microbiology Exam 1 Name_______________________ 1/30/07 1. (1 pt) Who was the first person to observe bacteria using a microscope? a. Lister b. van Leeuvenhoek c. Pastuer d. Koch 2. (2 pts) Which two of the following contribute to the opportunistic and infectious nature of bacteria? a. flagella b. ability to persist in unfavorable environments c. selectively permeable membranes d. fast growth e. ability to sense chemical gradients f. peptidoglycan 3. (1 pt) Capsules‚ sheaths‚ and
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that cell size had anything to do with the initiation of DNA replication in bacteria. The objectives and hypothesis was clearly stated in the paper. In order to find the answer to their question‚ the researchers used Escherichia coli (E. coli) and Bacillus subtilis (B. subtilis) in their experiment. Both E. coli and B. subtilis are common and well known bacteria that are used in research. They took the E. coli and B. subtilis and placed them in specific media for each step the in process of replication
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Write down a comprehensive essay on the basis of following Issues? A) Adulterated food: a serious public health problem in Bangladesh Adulteration of food with toxic chemicals harmful to health has reached an epidemic proportion in Bangladesh. The newspapers have dubbed it as the ‘silent killer’. It is very difficult to find a sector of food industry which is free of adulteration. From raw vegetable and fruits to milk and milk products to fish‚ meat and processed food–every food item is contaminated
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STATEMENT OF PURPOSE FOR FOOD SCIENCE The progression of technology and the effects it had on civilization has always fascinated me and generated profound interest in me. My decision to choose Food Science is not an impetuous decision‚ rather it was developed over a time. Since I was a kid I have seen my parents and grandparents using different cooking methods from time to time. My interest in finding the scientific reason behind their cooking practices grew strong as I grew older. Usage of
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E. coli O157H7 What is the morphology and gram reaction of this pathogen (2) E. coli‚ including E. coli O157H7 is a gram-negative bacillus. What do (i) O157 and (ii) H7 attached to the name of this bacterium represent (2). The O157 is the O HYPERLINK http//www.emedicinehealth.com/script/main/art.asparticlekey5469 serotype antigen that identifies the E. coli strain‚ and the H7 represents the antigen type on the HYPERLINK http//www.emedicinehealth.com/script/main/art.asparticlekey2416 bacteriums
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Fleas are very small insects. They are all flightless and do not have eyes‚ although two ocelli may be present. Their antennaes are short and their mouthparts are adapted for piercing and sucking. The female flea lays a few eggs daily that total up to 300 to 400 in its lifetime. The eggs are laid usually on animals and most drop off where they spend most of their time. Bedding‚ floor crevices‚ carpeting‚ along baseboards and areas near their favorite sleeping and napping sites are especially likely
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