Bacteria

developing bacteria that can cause cavities or even tooth erosion. Analysis: According to Marieb and Koehn’s 10th edition of Human Anatomy & Physiology, food or drinks that range from 0 to 6.9 on the pH scale are considered acidic. Sweet candies and sodas, starchy pastas and breads, as well as many fruit juices and coffee, all fall within this acidic pH range and can be harmful if consumed in great amounts. But

with mold. He saw that the colonies of bacteria surrounding this mold had been destroyed. What he had just

to decrease dramatically. With new viruses being discovered daily it has become an issue to find the correct source of medication to help, prevent, and kill bacteria. With the drug-resistant bacteria still slowly spreading all across the United States and around the world, our supply is slowly running dry. As the shortages rise and bacteria continues to increase, the infectious diseases begin to affect patient care. There had been said that numbers of drugs that were being used to treat severe

Introduction: Staphylococcus aureus (S. aureus) is a spherical bacteria which is known to produce a cytotoxin called Panton-Valentine leucocidin (PLV) which destroys leukocytes, and kills tissue (Lina et al., 1999). Five percent of strains of Staphylococcus are known to produce the disease-causing toxin (Lina et al., 1999), but though the amount of PLV-producing strains is somewhat small, the strains which produce PLV are apparently resistant to vancomycin, an antibiotic commonly used to treat

antibiotics still work, but MRSA is constantly adapting, and researchers and developers are having a difficult time keeping up. Staph are common bacteria that are denizens of the human body. It is perfectly fine to carry staph; a lot of healthy people hold it within their bodies without being infected by it. Furthermore, one third of the population has staph bacteria in their noses. However, staph can rapidly become quite a problem if it manages to enter the body, usually through a cut, and cause an infection

The Current State of Antibiotic Resistant “Superbugs” Introduction The rapid emergence of antimicrobial resistant bacteria is a startling problem facing the medical community and this problem is only expected to worsen in the coming years. When Sir Alexander Fleming discovered the first antibiotic, penicillin, in 1928, many proclaimed his finding as the most important modern medical discovery. Simple infections such as pneumonia could be treated rather easily despite the fact that such diagnoses

FISH analysis showed that the new extraction method was successful for four out of seven probes used on the sludge samples. The general probe EUB 338 showed a high density of bacteria in the seeding sludge and highly reduced densities after 24 and 28 days of operation, though still some patches with high bacterial density could be detected. In the samples from days 24 and 28 cloudlike structures were observed in all wells including negative controls, which showed high light intensity. These structures

the first to discover bacteria through the use of microscopes that he developed himself (2, 3). Since then, many more scientists have made other changes leading to even more advancements in microscopy. Some of the microscopes most commonly used in microbiology include bright field, dark-field, phase-contrast, fluorescence, and differential interference contrast (DIC) microscopy (1). For this particular report, bright-field microscopes are used to visualize the unknown bacteria. Microorganisms are

gram stained my bacteria by heat-fixing it over a flame, and covered my bacteria with crystal violet for one minute. After the minute, I washed the bacteria with purified water, then filled the bacteria with Gram’s iodine for another minute. After the minute, I cleaned the Gram’s iodine with purified water then added three drops of alcohol for 15 seconds. I cleansed away the alcohol with purified water and then add safranin for a minute. I washed off the stain and viewed the bacteria on 100X with immersion

A biofilm is a layer consisting of various combinations of many different organisms, autotrophic and heterotrophic. They are dense, organized communities of cells, encased in a self-produced slime. The bacteria grow together in water like atmospheres, attaching to a solid surface, forming a small ecosystem. Biofilms are known as a micro-environment, a micro-habitat, or a slime matrix. They help decompose dead organisms and recycle carbon and nutrients. Biofilms are formed on almost any surface