decided to do a project that revolves around bacteria. I was suggested to do a project where I get a petri dish containing my oral bacteria and see the effects of liquid on my oral bacteria. I was very curious about this topic and wanted to know how the bacteria grows so I gave it a shot. For my project‚ I was told to make an “if and then” hypothesis. My hypothesis was that “If I put orange juice on a petri dish containing my oral bacteria then the bacteria on the petri dish will multiply.” For this
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1.4.1. Safety Aspects of Probiotics Today‚ there are evidences that probiotic strains used as commercial bacteria are safe to use in applications. The safety of the probiotic products is appraised with the phenotypic and genotypic characteristics and the statistics of used microorganisms (Çakır 2003). Safety aspects of probiotic bacteria include the following requirements. 1. Strains for human use are preferred to be human origin. 2. They are isolated from healthy human gastrointestinal tract. 3
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after the fusion of two haploid or 1N prokaryotic cells. Others propose that the domains Archaea and Eukarya emerged from a common archaeal-eukaryotic ancestor that itself emerged from a member of the domain Bacteria. Some of the evidence behind this hypothesis is based on a "superphylum" of bacteria called PVC‚ members of which
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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 Class- Gammaproteobacteria Order- Enterobacteriales Family- Enterbacteriaceae Genus- Escherichia Species- E. coli Escherichia coli is a heterotrophic bacteria that is most commonly found within
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Bacteria have to developed a variety of mechanisms that allow them to enter the cells of their host‚ whether to replicate or to transmit the pathogen. One method of this is through pili. Pili are thin rods anchored to the outer membrane of bacteria with an adhesin at the tip. This adhesin is what gives the bacteria their binding specificity. Pili can serve a variety of roles such as‚ adhesion or the transfer of material during bacterial conjugation. Fimbria are a type of pili that are solely for
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The Effectiveness of Antimicrobial Agents Bacteria: Clearasil and Proactive Veronica Hillgren 11/16/12 FRI AM Question/ Hypothesis The purpose of my experiment is to find and compare the efficiency of Proactive™ and Clearasil™ acne products on certain bacteria. For myself‚ Clearasil™ works better than Proactive™ does when exposed to my pores‚ which are infested with bacteria. However‚ Proactive™ is widely known and has a large amount
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Abstract: It is important to be able to identify pathogenic bacteria that may be causing harm. Tomato crops can be affected by several different pathogenic bacteria. By using Koch’s postulates‚ it was determined that Pseudomonas syringae was the bacteria causing rot. There are four criteria that must be met when using Koch’s postulates. They are that the organism must be fund in all infected‚ the organism must be isolated in pure culture then once reinnoculated in a healthy host‚ must cause the
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strain of bacteria and to observe its characteristics. This same approach can be used when testing for resistance evolution within bacterial strains. Our hypothesis states that bacteriophage will not be present within our sample from East Lake. With the use of a phage buffer and soft agar‚ it provides an even suspension and growth of cells. This is essential for seeing lysis caused by bacteriophage. After 24 hours‚ our data seemed significant as signs of successful infection within the bacteria was not
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and its relatives ..Sulfa drugs ..Trimethoprim and sulfamethoxazole ..Other bacteria killers..Nitrofurantoin ..Aminoglycosides ..Polymyxin B..Antivirals..What can we do about viruses -- if anything? ..Acyclovir ..AZT and Other Reverse-Transcriptase Inhibitors ..Protease Inhibitors ..Why you shouldn’t use antibiotics for a cold What are antibiotics?Antibiotics are medicines that help your body fight bacteria and viruses‚ either by directly killing the offending bugs or by weakening them
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out how Erythromycin‚ Penicillin‚ and Ampicillin are affected by the bacteria Serratia marcescens. Our hypothesis is that Penicillin will have the largest ring of inhibition‚ the ring around the disk where the antibiotic has killed bacteria. We believe Penicillin will be the most common antibiotic that we have heard of. The materials we used to make this test possible consists of a sterile nutrient agar Petri dish‚ the bacteria Serratia marcescens‚ Erythromycin antibiotic disk‚ Ampicillin antibiotic
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