But what do the antibiotics exactly do? And how they can cure diseases? As a matter of fact, Antibiotics are powerful medicines that can cure bacterial infections if they are used properly. They fight against bacteria by destroying or inhibiting bacteria growth. Soil bacteria and fungi are the natural components of Antibiotics ((n.d.).
A study conducted by Marti et al (2013) found that the spread of antibacterial resistance genes came from wastewater treatment plant contaminants into the environment. Antibacterial genes were found more prevalent in downstream samples compared to upstream samples of bacterial communities. Antibiotic resistant genes have contaminated the public source water through the water supply system that allows antibiotics to thrive in the environment. To understand the mechanisms behind ARG, Cirz et al (2005) tested how inhibiting the pathway of a protease will affect E coli to gain resistance. Their findings showed that by inhibiting the mutation, it could be one of the possible ways of preventing bacteria from becoming resistant in the environment.
Enterococci can survive in monoculture, but cause only minor lesions. The outer membrane of Gram-negative bacteria contains endotoxin, which is present in all necrotic teeth with periapical lesions, and is able to trigger an inflammatory response even in the absence of viable bacteria. Furthermore, the levels of endotoxin in necrotic root canals are positively correlated to clinical symptoms such as spontaneous pain and tenderness to percussion.85 Virulent Gram-negative anaerobic rods rely on the presence of other bacteria in their environment to survive and establish their full pathogenic potential. Such collections of microorganisms in an extracellular polysaccharide matrix associated with a surface (the inner root canal wall) are called biofilms. There is convincing evidence that microorganisms organized in this manner are far less susceptible to antimicrobial agents than their planktonic counterparts, which have been used by tradition to check the antimicrobial efficacy of substances in
Aerin Nortier Grade 11.2 Biology research project Introduction Bacteria are everywhere some harmful and others not, without bacteria the world would be nothing. In this research paper I will be discussing bacteria, anti-bacterial agents, pros and cons of bacteria and my conductive experiment on the growth and the killing of bacteria. Bacteria are single cellular organisms that most commonly reproduce through means of binary fission. They were first discovered by Anton Leeuwenhoek in 1676 and are classified as Monera in the five kingdom classification system. Anti-bacterial agents kill or inhibit bacterial growth.
INTRODUCTION Success of root canal depends mainly on the elimination of bacteria from root canals. The microorganisms present in root canal plays important role in pathogenesis of apical periodontitis. The bacterial elimination from root canals is obtained by mechanical instrumentation using various irrigating solutions and intracanal medicaments. Hermann introduced Ca(OH)2 in 1920 which was used as a pulp capping agent. Because of it’s excellent results it is used widely for various endodontic therapy as intra-canal medicaments, sealers, pulp capping agents, apexification procedures, pulpotomy and weeping canals.
The enterotoxins cause food poisoning in humans. The exfoliatin caused scalded skin syndrome. Toxic shock syndrome toxin causes rash, diarrhea, and shock in humans. The last virulent factor is the alpha toxin. This makes holes in the host cell membrane.
It is often used in the selective identification of enteric bacteria including Salmonella and Shigella. The TSI agar has glucose, lactose and sucrose as the sources of carbohydrates. Phenol red is the acid base indicator incorporated in the medium. The TSI medium indicates whether the bacteria ferments glucose only, or lactose and sucrose with or without production of gas. Nitrate serves as a source of nitrogen for many bacteria.
These agents however have a residual effect besides contributing to environmental contamination. In an attempt to mitigate the negative effects of chemical pesticides and herbicides more individuals are warming up to the use of biocontrol agents; microorganisms that are natural enemies of other microorganisms. Entomopathogenic fungi such as Verticillium lecanii are now being commercially produced as bioinsecticides. Biocontrol entails mechanisms such as mycoparasitism, competition for resources, pathogenicity or allelopathy. This approach of weed and pest management offers a long-term solution as most biocontrol agents are species specific and persist in the environment with minimal interference of the natural
During production, the chemical released harm the environment and cause pollutions especially for land and water pollution. In contrast, Mycofoam can be reuse, recycle, and rebuild to a new products, it helps to reduce wastage of material and is able to protect the environment. Now, Mycofoam is infused with seedlings. The seedlings are grown once the Mycofoam decomposed near suitable condition.
Two of the most common pollutants from slaughterhouses are carbon dioxide and methane. “Slaughterhouses are also responsible for large outputs of greenhouse gases such as methane and carbon dioxide, both major contributors to climate change“ (Farr). The question I’d like to answer is; How can switching to a vegan diet impact a person's health, social life, and the planet? The answer that I got from research on the environment due to the meat industry is - slaughterhouses emit tons of greenhouse gases that pollute the air, and the water is polluted by dumping things such as manure and fat into the water. I believe that slaughterhouses and the meat industry are extremely bad for the