Gram-negative bacteria

the world as contaminated water may introduce illness or even diseases in both humans and animals. The water is considered to be unsafe for human consumption when it is found to be contaminated with pathogenic bacteria which may

the unknown bacteria, #3. Identification of unknown bacteria yields multiple benefits in many different areas in the research of microorganisms. In this experiment I performed many different test dealing with things such as the presence of enzymes, fermentation abilities and different chemical reactions. Observations made from the tests were then compared to a gram negative unknown chart in order to identify the bacteria. Based off of my results and the chart, I concluded the bacteria #3 was the

Introduction The objective of this experiment is to identify the organisms of two unknown bacterial cultures. Students must identify the species of the unknown bacteria by utilizing the techniques and information learned in previous laboratory exercises. These techniques include streaking for isolation, Gram staining, and specific biochemical tests. Students are given a map known as a dichotomous key, a guide in determining the identity of their unknown sample. Identifying microbes using a series

to identify an unknown bacterium from a mixed culture. We identified the unknown bacteria through different biochemical tests and identified the many metabolic capabilities of the bacteria. Studying and discovering unknown bacteria is very important in the health field as it may lead to new medicines and innovations for current, existing diseases as well as any upcoming diseases. The discovery of unknown bacteria is very useful in the pharmaceutical industry, as most of the products prepared are

possible bacteria responsible for these symptoms, a vaginal swab was sampled, incubated on agar overnight and stored at 4C, after which they were examined throughout a series of microbiological tests. The initial culturing of the sample on nutrient agar indicated two organisms were present, and hence these were analysed individually. A Gram stain was applied to each bacterium and they were viewed individually under microscope at 1000x oil immersion magnification. This specified both Gram negative diplobacilli

Unknown Bacterium #C-4 Laura Bromley Russell Sage College BIO 208L- Microbiology Lab Professor Anne Rea Due: April 14, 2015 Introduction When we speak of the word “bacteria” some individuals may not recognize how large of a role these tiny organisms play in our everyday lives. Some may jump to the conclusion that bacteria are related to the spread of germs or sickness among the human population. Most microbes are harmless or beneficial (Matthews, 2015) and a large majority of these tiny microbes

Section I- Introduction Microbiology is the biological study of organisms that are too small to be seen with the naked eye (1). Microbiology includes examining a variety of different microbes such as bacteria, archaea, protozoa, fungi and viruses (1). By examining these microbes, their relationship with people and the environment they grow in, is better understood. These examinations of microbes have played a major role in comprehending how microbes can be helpful and harmful, and how

of this report was to identify an unknown microorganism through several differential media tests. Over the course of a couple weeks, ten tests were performed. First, a gram stain was performed, indicating the bacterium was gram negative. An aerotolerance test determined that the bacterium was a facultative anaerobe. Next, a negative result in the methyl red test indicated that no mixed acid fermentation occurred. The DNase test was performed and yielded a positive result. The SIM test provided two

certain antibiotic. Understanding the principals of living microbes and identifying my unknown bacteria through numerous biochemical and metabolism tests, with the outmost confidence, Proteus vulgaris had the precise qualifications. The point of this report is to further explore the identification of my unknown bacteria by revealing the results of the experiments and comparing them to the other six known bacteria: Micrococcus luteus, Staphylococcus aureus, Staphylococcus epidermidis, Alcaligenes faecalis

EO is also regarded to have antimicrobial activity against pathogenic bacteria, therefore it is also used to treat wounds to prevent infection. Penicillin G. Penicillin G. is also known as Benzylpenicillin. It is used to treat a variety of bacterial infections. Usually Penicillin G is obtained from microbial sources such as Escherichia coli (Cole, 1969). It works on most Gram-positive bacteria, and some Gram-negative bacteria. Gentamicin Gentamicin is also an antibiotic, like Penicillin, and is