Antiseptics and disinfectants

The higher the concentration of antiseptic, the more powerful it will be at inhibiting/ killing microorganisms which cause bacterial growth. † This theory supports my result because as you can see the zone of inhibition increases due to the increasing concentration of antiseptic. The higher concentration of antiseptic means it has been less diluted, which means its more stronger than other more diluted concentrations, this high concentration will determine how powerful the antiseptic will be at killing/inhibiting the growth of bacterium, this high concentration of antiseptic will break down the bacterial cell wall, after this process has happened the antiseptic can stop the mutation of the bacteria and inhibit the growth of the bacteria or kill the bacteria. As you can see from my results the higher amount of antiseptic agent present in the ajar jelly, the more powerful it will be at destroying the bacterial cell wall, that is why with the increasing concentration of antiseptic the zone of inhibition increases because the high dose of concentration is attacking the bacteria, hence inhibiting a larger zone of inhibition. On the other hand decreasing the concentration of antiseptic reduces the effect of destroying the bacterium; the weaker the concentration is the less powerful it is at attacking the cell wall of the bacteria. As you can see from my results at the point of 10 percent concentration the smallest zone of inhibition is present this is because the weaker concentration wasn’t strong enough to attack enough of the bacteria in the ajar jelly, so a smaller zone of inhibition became present. During incubation, the chemical diffuses from the disk containing the agent into the surrounding agar; my weaker concentration also wasn’t able to diffuse as well as a higher concentration. Another factor is that my higher concentration wasn’t diluted as much as much as my lower concentration, which means that the water neutralised some of the powerful chemicals in the lower concentration of antiseptic, which were lethal for destroying some of the bacterial agents. 6a) Use of the proper concentration of a disinfectant is important to Achieve the best results for each situation. Some products will have different dilutions Depending on the desired use of the product. Although some Disinfectants may be more efficacious at higher concentrations, However, over-dilution of a product may render the disinfectant ineffective to the target of destroying the Microorganisms. The product label will list the best concentration to use for each situation. Be sure to consider any standing water or other water sources (i. e. , rainfall) in the area as a Potential dilution source for a disinfectant. Antiseptics are more suitable for cleaning hands rather than disinfectants because disinfectants are meant to destroy microorganisms which can infect non-living objects, whilst antiseptics are used on living tissues and cells to destroy any type of infections or sepsis which may be living on the tissue, that is why antiseptics are used in hand sanitizers to clean hands rather than disinfectants. Some people differ between using antibiotics or antiseptics for hand washing, antibiotics and antiseptics are both chemicals that prevent the growth and development of bacteria, but antibiotics are effective only again bacteria whilst antiseptics act on a wide range of microorganisms, making antiseptics more suitable for hand sanitizers. Antiseptics are chemical agents that slow or stop the growth of micro-organisms (germs) on external surfaces of the body, that is why they are suitable to use on the skin as they are designed for that pacific reason to stop bacterial growth or any other microorganisms from spreading or causing infection on the skin and external surfaces on the body. Antiseptics should be distinguished from antibiotics that destroy micro-organisms inside the body, and from disinfectants, which destroy micro-organisms found on inanimate (non-living) objects. Antibiotics and disinfectant are designed for other reasons as you can see and contain some different chemical agents that maybe harsh on the human skin so that is why disinfectants and antibiotics may not be suitable on the skin.

Essay Example | Topics and Well Written Essays - 500 words - 115

Essay Example Armstrong on the other hand would no longer challenge the USADA decision finding USADA’s investigation dismissing it as a â€Å"witch hunt† that is bent on convicting him without any physical evidence. Armstrong denied that he ever took banned substances in his career (Associated Press). This decision of USADA to strip Armstrong of his titles and ban him from the sport for life is not only wrong but also excessive. It can be likened to a death penalty (Zimmerman) of which Armstrong is undeserved. It is based on onerous and unreasonable proceedings t that even the United States District Court indicated the troubling aspect of the case and indicated â€Å"the deficiency of USADA’s charging document is of serious constitutional concern† (2012 WL 3569682). It is important to state that the prosecution of USADA against Armstrong is based on â€Å"non-analytical positive† or from witness testimony and not from the presentation of concrete, scientific laboratory results. Armstrong was right when he commented that USADA convicted him without any physical evidence. To back up that comment, it has to be noted that Armstrong never tested positive to over 500 tests he was subjected to during his active career. Worst, the use of â€Å"analytical non-positive† proceeding to convict Armstrong that requires the testimony of a witness was tainted with corruption making the ground of his conviction to be doubtful if not illegal. It could be argued that there are numbers of witness who testified against Armstrong that justified the conviction. But the manner of which those testimonies were obtained or extracted automatically removes the credibility of such witnesses and making it unfit to be used as evidence in the court of law. An agency cannot break the federal bribery law just to convict anyone. Thus, the evidence used against Armstrong can be dismissed not only as hearsays but also illegal that could nullify the charges hurled

The Circulatory System and It's Importance Essay

The Circulatory System and It's Importance - Essay Example Because of what it does for man, the circulatory system can also be considered the most important one. Without the circulatory system, man will not be able to live. People usually associate the circulatory system with blood and they are not mistaken. In the most basic sense, the job of the circulatory system is to ensure that blood moves around inside man’s body, supplying the nutrients needed in order for all the parts of the body to function properly. While the blood carries the oxygen and nutrients to the body, it also collects the carbon dioxide from the same. If there is no proper flow of blood, the organs in the body will not be able to function well. The circulatory system can be divided into three parts: pulmonary circulation, coronary circulation and systemic circulation. The heart, lungs and bloods vessels are the major organs in each of these parts. Each individual part has its own unique process of blood circulation. â€Å"The successful circulation of each part r esults to an efficient distribution of blood throughout the body.† (Body) The heart The central organ in the circulatory process is the heart. Composed of four chambers that are divided by a wall, this muscle pushes 2,000 gallons of blood containing oxygen and nutrients into the body. (Dowshen) The heart sends the blood out through its pumping motion. â€Å"It beats about 100,000 times a day, more than 30 million times per year, and about 2.5 billion times in a 70-year lifetime (Dowshen).† The speed of the heart’s pumps depends on the kind of activity the body does. It pumps slower when the body is at rest and faster when the body is in motion. This is because man uses up more energy when immersed in activity. Energy comes from oxygen and oxygen comes from blood. The source of oxygen-rich blood is the heart. The four chambers of the heart can be grouped into two; namely, the upper and lower. The upper chamber or left and right atria receive the blood which has pa ssed through the different organs in the body. On the other hand, the heart releases the blood to be used from the lower chamber or left and right ventricles. Two cardiac valves separate the bottom part of the heart from the blood vessels that allow blood to the rest of the body. The pulmonic valve is between the right ventricle and the pulmonary artery which goes to the lungs. The aortic valve is between the left ventricle and the aorta. The heart also has two major arteries which in turn gives blood to the heart. The right coronary artery allows blood into the right atrium, right ventricle and the bottom part of the right and left ventricle. In contrast, the left coronary artery pumps blood to the left atrium and the left ventricle. Because of the heart’s function in supplying blood, it can be said that the heart is the most important organ in the circulatory system. The blood vessels Blood moves around the body through three groups of blood vessels. Aside from those which deliver and release blood to and from the heart, there are also blood vessels responsible for distributing blood throughout the body and bringing blood back to the heart. The first group of blood vessels can be found in the heart. When leaving the heart, blood flows through two arteries. The aorta is the thickest blood vessel and carries blood with oxygen to the rest of the body. The pulmonary artery, on the other hand, delivers blood to the lungs which converts oxygen-poor blood into oxygen-rich blood for the body to use. The second group of blood ve