Bacterial Culture Techniques Essay Example | Topics and Well Written Essays - 500 words

Bacterial Culture Techniques - Essay Example Bacteria have been often termed as being the primitive beings and are said to help with the nitrogen cycle. In a wider view if looked at bacteria are all those unicellular organisms that belong to the category of Schizomycetes they may have a difference in their requirements for oxygen and nutrients and have difference in morphology as well as have varying motility and be free-living. Bacteria are also known as prokaryotes in general and these are known to be grouped together as they all do not have nuclear membranes. The growing of cells in a synthetic environment is known as cell culture. That could very well refer to either types of cells be those prokaryotic or eukaryotic cells. Culture can also be called the in vitro growing of cells of either plants or animals in a nutrient artificial medium. In the process of cell culture the cells used are no longer in an organized tissue form rather they are separate and grown in a simulated environment. The materials that are necessary for culturing bacteria cells are (a) culture tubes that are made of glass and that have their own labels and metal covers. (b) Media room or customized growth medium for simulation. (c) Para Film is also needed and (d) Pipette tubes that are also made of glass. Other necessary equipment includes Bunsen burners, motorized pipettes and micropipettes along with sterile tips. The first step in culturing bacteria cells is to streak an Agar plate and then incubate that until there begins a growth in colonies. Some bacteria have a temperature sensitive mutation rate and there fore would require the incubators to be set at 30C however in the case of E.coli the desired temperature for incubation is 37C. In order to be certain that the beginning of this culture has been from a single population of cells streaking of the plate is necessary. It is not necessary that you use an Agar plate as they are only

Stem Cell Research Paper Example | Topics and Well Written Essays - 1500 words

Stem Cell - Research Paper Example The intentions of this study are stem cells, the cells found in multi-cellular organisms, both humans and animals. The cells have the ability to renew through miotic cell division where they differentiate into specialized cell types. The stem cell exists in two types, namely the embryonic stem cell and the adult stem cells. The cells have the ability to treat a wide range of diseases which has resulted in many technologies being employed to study their viability and effectiveness. The study of stem cells has become common due to the ability of the stem cells to perform several functions. This is due to the fact that the stem cells have the ability to specialize into any desired cell type. Genetic diseases have become a serious issue in the world today. It is therefore, important to understand how the genetic diseases occur and what can be done to remedy the situation. Genetic diseases caused by chromosomal anomalies’ can be rectified by using stem cells. This is due to the fac t that stem cells have differentiation and proliferation effects that can help in addressing the situation. Stem cell application is therefore important in the prevention and correction of the genetic diseases. Scientific research has shown that stem cells are important in the treatment of several types of diseases that people suffer from. Stem cells are mainly used in the treatment of diseases that require organ transplant. This is due to their ability to differentiate into cells that exhibit special characteristics. ... Stem cells are mainly used in the treatment of diseases that require organ transplant (Hayat, 2011). This is due to their ability to differentiate into cells that exhibit special characteristics (Klimanskaya, Chung, Becker, Lu & Lanza, 2006). Stem cells are currently being used to carry out cancer therapies for those who are diagnosed with the disease. Cell therapy in this case is carried out to replace the tissues affected by the disease with the stem cells. This has helped in the treatment of cancer of the breast and skin. The stem cell is also used in the treatment of brain and blood diseases, and in tissue and organ regeneration (Hayat, 2011). Understanding Human and Animal Development Human beings develop from stem cells. Stem cell study is important as it helps people in understanding how human beings and animals develop from conception to death (Viegas, 2003; Takahashi & Yamanaka, 2006). This is due to the fact that there are some diseases that affect humans as a result of abn ormal cell differentiation and proliferations. Due to this fact, abnormal stem cell division may cause certain diseases. Therefore, it is important to have a good understanding of stem cells will assist in the prevention of abnormal changes in the stem cells and assist in getting better treatment for diseases associated with poor stem cells such as cancer. Arguments against the Use of Stem Cells Ethical considerations Despite the many benefits of the stem cells, there are some cons associated with their application. The use of the embryonic stem cell goes against human dignity and right to life. This is because the embryos are considered to be living beings and should be left to develop uninhibited to become an adult. Human life is very valuable and should never be voluntarily destroyed