Comparing Normal Red Blood Cells Characteristics and Sickle Cell Essay

Essays on Comparing Normal Red Blood Cells Characteristics and Sickle Cell Essay The paper "Comparing Normal Red Blood Cells Characteristics and Sickle Cell" is an outstanding example of an essay on category. Normal human red blood cells are biconcave disc-shaped with a high capa for deformability (Diez-Silva et al. 382). Sickle cell red blood cells are present in individuals suffering from a type of structural hemoglobinopathy called sickle cell anemia. Normal adult red blood cells and sickle-shaped red blood cells are different because of the dissimilar composition of the amino acid chain in their hemoglobin. Adult hemoglobin has two ÃŽ ± globin chains and two ÃŽ ² globin amino acid chains. It has been known for quite some years now that in sickle-shaped red blood cells, the glutamic acid of ÃŽ ² globin polypeptide chain is replaced by valine (Diez-Silva et al. 382). Thus, polypeptide chains of hemoglobin are different in these two red blood cell phenotypes. Genetically, this replacement occurs as a result of missense single base mutation, wherein adenine is ch anged to thymine within the 6th codon. Negatively charged glutamic acid provides stability to the red blood cell structure and its loss leads to alteration in the electrophoretic mobility.   This altered phenotype of sickle cell is manifested in the deoxygenated state when the deoxygenated hemoglobin molecule undergoes conformational change into long polymers which distort the red blood cell into a distinctive sickle shape, cause potassium leakage and increase the viscosity. Compared to normal adult red blood cells, sickle cells have reduced pliability and increased ‘stickiness’ so that they cannot traverse through small capillaries and adhere to the endothelium of small venules. Thus, sickle cells are more rigid and adherent as compared to normal red blood cells (Benz 669). Also, these cells are more prone to hemolysis in the spleen. After repeated cycles of shape change, these red blood cells become permanently sickled (Diez-Silva et al. 382).

Behavior Therapy Is A Psychological Approach - 1241 Words

Behavior therapy is a psychological approach focusing on observable behavior determined by the environment and the history of interactions between the individual and his environment. For example, learning is described as a â€Å"modification of the observable behavior, due to the change in the force with which is associated a response to external stimuli (outer environment) or internal stimuli (internal environment) to the body.† (Corey 2013 p.250) My understand of Behavior therapy is a type of psychotherapy that concentrations on shifting unwelcome behaviors. It contains recognizing, maladaptive behavior objectionable and substituting them with better kinds of behavior. Behavior therapy has been used to treat a wide range of mental†¦show more content†¦Individual’s take charge of their lives rather than being the victims of situations beyond their control. The reality therapist functions as a teacher, a mentor, and a model, confronting clients in ways that help them evaluate what they are doing and whether their behavior is fulï ¬ lling their basic needs without harming themselves or others. The heart of reality therapy is learning how to make better and more effective choices and gain more effective control. People take charge of their lives rather than being the victims of circumstances beyond their control. †Reality therapy focuses on what clients are able and willing to do in the present to change their behavior.† (Corey 2013p.335 ) However all these theories have a shared interests and that is for the client to get better.

Community Service free essay sample

Dripping wet, a boy with blue swim trunks dashes up to me after his name is called. I gently extend my hand to give him his ribbon. He got fifth place. Instead of snatching the ribbon from my hand, he flung his arms around me. Unsure by how to respond, I gave him a hug back. He got fifth place and he is happy? Once he got the ribbon he took his spot in line with a huge grin on his face. I hadn’t expected this reaction so many times throughout the day. Volunteering for the Special Olympics was supposed to be for church. But this has proved to be a learning experience. I feel more involved in the community, and just by handing out ribbons to children with Downs Syndrome. Being more involved in the community has made me aware of the challenges people face each day and things I can do to help. We will write a custom essay sample on Community Service or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Seeing the fulfillment in those kids’ eyes gave me a feeling of self-accomplishment. Knowing I helped make their day better, made their family’s life easier, was partly because of my doing. They made me realize to be happy for the little things and enjoy each moment. When a child’s life is full of complications, there is no time to be let down by life’s everyday throwbacks. I thank that boy for giving me the opportunity to look beyond what is in front of me. He has taught me a lesson that no book or teacher ever could. Quoting the movie Patch Adams, Arthur Mendelson says, â€Å"See what no one else sees. See what everyone chooses not to see out of fear, conformity or laziness. See the whole world anew each day!† Helping those kids has made me see that. Many people have told me to be something extraordinary, but I have realized I am the only one who can accomplish that. Community Service free essay sample My service work has had a greater impact on my life then I first imagined it would have. I have learned that by helping others, I am also helping myself to become a better person. The opportunities I have been given to help others has helped me mature greatly. In preparing for my community service work, I was struck by how many people, animals, and organizations could benefit from my help. Many people think one person cannot make a difference; I now know that that is not true. For my community service projects, I have chosen to help people in different ways. Helping raise money for our veterans gave me a wonderful feeling as a simple thank you does not seem enough for the men and women that protect our country. Many of these veterans were wounded and had their lives changed forever while at war. Raising money to help them live a better life was rewarding. We will write a custom essay sample on Community Service or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page My community service with Camp Harmony has changed my life in many ways. It took me out of the comforts of my daily life and showed me that many in the world are less fortunate than me. Although I knew this before working at Camp Harmony, once I met the kids I really understood how lucky I am. Meeting all of these wonderful kids, I realized that my future would always include helping kids lead a happy childhood. Although happiness is at my fingertips every day, for these kids at Camp Harmony, we create this experience for them for a short period of time. While at Camp Harmony Winter Camp, I had a camper who received a hair tie from my unit head Max. Though it was just a simple hair tie, my camper was extremely happy and thankful and told me that she loved it. She then said that one day she would give the hair tie to her daughter, and that she too would go to Camp Harmony. I then realized how much this camp means to these children. Training to be a counselor at Camp Harmony was an eye opening experience for me. It saddened me to hear that there would be children hoarding food because many of them did not have much at home. I know that I will continue throughout my life to help children to not go hungry. The community service I have been lucky enough to do so far has changed my life. I know that I will continue to do more community service, and it will continue to affect me in many ways. It has helped me to become a better person and I have enjoyed every minute of it.

Online Marketing Essays - Marketing, Business, Brand Management

Online Marketing The internet application called the world wide Web (WWW) is one of the technological tools that is making a significant impact on marketing. The Internet is a wed of more than 2.2 million computers linked by telephone on more than 32,4000 connected computer networks and is accessible in 135 countries and territories (Kotler). This medium provides relatively inexpensive way for companies to advertise their products to millions of people, 24 hours a day. It also opens up the home-shopping market and gives consumers easier access to international markets. It is convenient for customers because they can order products wherever they are, and they don't have to deal with things like traffic, parking spaces and useless trips when items are out of stock. (Kotler). Consumers can also compare information about different or competing companies more easily because information is literally at their fingertip. Consumers don't have to deal directly with sales people and be influenced by them to mak e purchases. Companies can also stay in touch with their customers and suppliers by creating web pages and setting up internet addresses to receive e-mail from customers worldwide. The WWW also provides a quick way to link employees to remote offices that may need to formulate and develop marketing plans and strategies. The communication limke to these offices also offers the ability to distribute information like sales information more quickly, which could result in better decision making.