Bacteria

The Effect of Anti-Microbial Products on Zone of Inhibition Background Information: Bacteria, singular form bacterium, are microorganisms which belong to their own animal kingdom – Kingdom Monera. All bacteria are alive and require to reproduce and eat. In the experiment, the bacteria used is called Staphylococcus aureus, which can cause a variety of diseases (e.g. meningitis, boils and abscesses, osteomyelitis, pneumonia etc.). Various strains of Staphylococcus aureus are resistant to some antibiotics

Introduction Bacteria growth on the petri dishes can be compared to bacteria growth on food. Bacteria grows on food and takes its nutrients from the food, in the same way that the bacteria in the petri dishes gets its nutrients from the nutrient agar. Also bacteria on food can spread very quickly over the food, just as it can in the petri dish. The microorganisms that contaminate food can be good and bad bacteria, as it can be in the petri dish, not all bacteria is harmful. The same common types

The Gram-Stain was performed as the basis for testing and identification, as Gram-Stains are a primary test for identifying bacteria. Based on the result of the Gram-Stain, several more tests may be carried out to identify the bacteria. In this experiment, the initial Gram-Stain had no result, as there were no bacteria that could be seen in the microscope. This could be due to not collecting enough of the organism on the slide before beginning the Gram-Stain. The T-Streak

warning due to high levels of enterococci bacteria being found in the water. As a recreational park offering fishing, swimming, and camping, this is a serious problem. To understand why this is such an important issue, it must first be understood exactly what enterococci bacteria is, and the health risks that elevated levels of these bacteria can pose. Enterococci bacteria are fecal bacteria often used to measure the pollution levels

handful of soil from outside you are not only picking up soil you are picking up a handful of microbes. In that one handful there are many different varieties of living microbes, they range from algae, fungi, bacteria and many more. “A single teaspoon of that soil contains over 1,000,000,000 bacteria, about 120,000 fungi and 25,000 algae.”(Microbe World) They are found everywhere that you can think of on Earth, this includes the ground, air, plants and animals. Microbes are one of the oldest living things

environment can save the lives of thousands or even millions of people. Some bacteria are opportunistic pathogens such as Pseudomonas. These pathogens do not commonly infect healthy people, but rather take any opportunity possible such as an open wound or an immunocompromised system. Knowing the bacteria which can prevent or promote the growth of agriculture can help to feed populations. Being able to identify bacteria is a task not to be taken lightly. Many different tests are possible to determine

characteristics of the unknown. The structure of the cell wall of the unknown was determined by observing the Gram test. For this test Gram stain yielded pink coloration of bacteria, which states that the cell wall structure

occurring. Antibiotics are medicines used to treat foreign bacteria in the body. In 1928, Alexander Fleming discovered the first antibiotic, penicillin, when testing the bacteria pathogen Staphylococcus aureus; the mold in his lab was capable of killing bacteria. Taking too many antibiotics can destroy the microbes in the gut, which help fight the bacteria in the first place. When bacteria changes DNA in the cell, the newly formed bacteria infection is now resistant to the former antibiotic treatments

indicate a negative mixed-acid fermentation (Leboffe, Microbiology Laboratory Theory and Application). Two of the four bacteria used had red broth indicating positive test results for mixed-acid fermentation with glucose, they were Escherichia coli and Proteus vulgaris, my known bacteria. The other two bacteria, Alcaligenes faecalis and Enterobacter aerogenes, and unknown bacteria D were negative for mixed-acid fermentation. Based on these test results, my unknown could be Alcaligenes faecalis or

It is undeniable that the recent discovery of antibiotics and disinfectants in the past century is leading to the creation of increasingly dangerous antibiotic-resistant bacteria. Super bugs like Methicillin-resistant Staphylococcus have begun breaking out in hospital areas, killing more and more patients due to the lack of people following through with simple safety measures. In order to stop the creation and spread of antibiotic-resistant super bugs, proper precautions must be taken such as avoiding