Chemical Composition of the Human Body

Many of the elements found throughout nature are also found within the body. This is the chemical composition of the average adult human body in terms of elements and also compounds. Major Classes of Compounds in the Human Body Most of the elements are found within compounds. Water and minerals are inorganic compounds. Organic compounds include fat, protein, carbohydrates, and nucleic acids. Water:  Water is the most abundant chemical compound in living human cells, accounting for 65 percent to 90 percent  of each cell. Its also present between cells. For example, blood and cerebrospinal fluid are mostly water.Fat: The percentage of fat varies from person to person, but even an obese person has more water than fat.Protein: In a lean male, the percentages of protein and water are comparable. Its about 16 percent  by mass. Muscles, including the heart, contain a lot of muscle. Hair and fingernails are protein. Skin contains a large amount of protein, too.Minerals: Minerals account for about 6 percent  of the body. They include salts and metals. Common minerals include sodium, chlorine, calcium, potassium, and iron.Carbohydrates: Although humans use the sugar glucose as an energy source, there isnt that much of it free in the bloodstream at any given time. Sugar and other carbohydrates only account for about 1% of body mass. Elements in the Human Body Six elements  account for 99%  of the mass of the human body. The acronym CHNOPS may be used to help remember the six key chemical elements that are used in biological molecules. C is carbon, H is hydrogen, N is nitrogen, O is oxygen, P is phosphorus, and S is sulfur. While the acronym is  a good way to remember the identities of the elements, it doesnt reflect their abundance. Oxygen is the most abundant element in the human body accounting for approximately 65% of a persons mass. Each water molecule consists of two hydrogen atoms bonded to one oxygen atom, but the mass of each oxygen atom is much higher than the combined mass of the hydrogen. In addition to being a component of water, oxygen is essential for cellular respiration.Carbon is contained in all organic compounds, which is why carbon is the second most abundant element in the body, accounting for about 18% of body mass. Carbon is found in proteins, carbohydrates, lipids, and nucleic acids. Its also found in carbon dioxide.Hydrogen atoms are the most numerous type of atom in a human, but because they are so light, they only make up around 10% of the  mass. Hydrogen is in water, plus its an important electron carrier.Nitrogen is about 3.3% of body mass. Its found in proteins and nucleic acids.Calcium accounts for 1.5% of body mass. Its used to build bones and teeth, plus its important for muscle contraction.Phosphorus is about 1% of body mass. This element is found in nucleic acids. Breaking bonds connecting phosphate molecules is a major component of energy transfer.Potassium is around 0.2-0.4% of the mass of a person. Its used in nerve conduction. Potassium is a key cation or positively-charged ion in the body.Sulfur is found in some amino acids and proteins. Its about 0.2-0.3% of body mass.Sodium, like potassium, is a positively-charged ion. Its about 0.1-0.2% of body mass. Sodium helps regulate the electrolyte balance in the body and maintain homeostasis with respect to the volume of water in the blood and cells.Although aluminum and silicon are abundant in the earths crust, they are found in trace amounts in the human body.Other trace elements include metals, which are often cofactors for enzymes (e.g., cobalt for vitamin B12). Trace elements include iron, cobalt, zinc, iodine, selenium, and flourine. Element Percent by Mass Oxygen 65 Carbon 18 Hydrogen 10 Nitrogen 3 Calcium 1.5 Phosphorus 1.2 Potassium 0.2 Sulfur 0.2 Chlorine 0.2 Sodium 0.1 Magnesium 0.05 Iron, Cobalt, Copper, Zinc, Iodine trace Selenium, Fluorine minute amounts Does the Body Contain All the Elements? The average human body contains tiny amounts of elements that serve no known biological function. These include germanium, antimony, silver, niobium, lanthanum, tellurium, bismuth, thallium, gold, and even radioactive elements like thorium, uranium, and radium. However, not all elements on the periodic table are found in the body. These are primarily the synthetic elements, which are made in laboratories. Even if they did occur in the body, most of the superheavy nuclei have such brief half-lives, they would decay into one of the more common elements almost instantly. Sources Anke M. (1986). Arsenic. In: Mertz W. ed., Trace elements in human and Animal Nutrition, 5th ed. Orlando, FL: Academic Press. pp. 347-372.Chang, Raymond (2007). Chemistry, Ninth Edition. McGraw-Hill. pp. 52.Emsley, John (2011). Natures Building Blocks: An A-Z Guide to the Elements. OUP Oxford. p. 83. ISBN 978-0-19-960563-7.Subcommittee on the Tenth Edition of the Recommended Dietary Allowances, Food and Nutrition Board; Commission on Life Sciences, National Research Council (February 1989). Recommended Dietary Allowances: 10th Edition. National Academies Press. ISBN 978-0-309-04633-6.Zumdahl, Steven S. and Susan A. (2000). Chemistry, Fifth Edition. Houghton Mifflin Company. p. 894. ISBN 0-395-98581-1.

The Civil War And The Slavery - 986 Words

The Civil War contributed to the enslaved period being terminated. The union allowed slaves to fight for them and this imposed on the slave masters throughout the south. During this period the slaves were very rebellious and violent towards their masters. They beat them, tortured them, and some even killed some of the slave masters. They all truly deserved it after the treatment that had been rendered towards the African Americans when they first arrived from the West Indies to the United States. So, fighting was in the Civil War became an honor for some and a way out for other slaves as they fought for equality and justice for all. Abraham Lincoln was elected President in 1861 during this Civil War period and he was anti-slave minded. The African American slaves received a chance to fight and obtain their freedom at the conclusion of the war. This was an option offered by the union army to the African American slaves and the vast majority joined the union and fought, many died, but others were treated with respect and received what almost expected at the conclusion of the Civil War (Holt Brown, 2000). The soldiers in the war had a chance to visit other plantations where some of their family and friends were located. They sung to express their oppression and true feelings of this enslaved environment and the struggles that came with it. The songs used animal characters to supplement the slaves and their masters and were very popular and powerful. This was also a part ofShow MoreRelatedSlavery And The Civil War958 Words   |  4 Pagesblood in slavery so that many parts of America could become prosperous and recognized in the world†, this is quote from Josephine Baker, one of America’s early prominent black performers. Slavery, which will be discussed in greater detail, affected Africans kidnapped from their homeland and brought to the Americas to be sold and forced to work in horrible, vile, disgusting conditions. Slavery was also a great economic boosts for the United States due to cotton, however, overtime slavery began toRead MoreSlavery And The Civil War1706 Words   |  7 Pagesitself. The United States were no longer united, mainly over the issue of slavery. In fact, many historians believe that, â€Å"From the nation’s founding, the issue of slavery threatened to tear the United States apart.† (â€Å"The Civil War† 1). The issue of slavery was always kept at bay through the utilization of various compromises; however a permanent solution was never sought after by the government. The peoples’ perspective of slavery differed by region. In the South, the economy was extremely reliant onRead MoreSlavery And The Civil War1641 Words   |  7 PagesThe American civil war was in no doubt the most crucial event in history. No other war compares or even comes close to the casualties suffered. It helped conserve and maintain the Union, drastically changed the relationship between the federal and states government, and led to slavery’s abolition. This war has also stirred up many conflicts until this day about the conflicts and causes. Among the countless and even undiscovered questions comes the most common as being why the Southern states wereRead MoreSlavery And The Civil War1527 Words   |  7 PagesSlavery is a lawful or monetary framework in which standards of property law are connected to people permitting them to be named property, to be possessed, purchased and sold as needs be, and they can t pull back singularly from the course of action. While a man is a slave, the proprietor is qualified for the efficiency of the slave s work, with no compensation. The rights and security of the slave might be controlled by laws and traditions in a specific time and put, and a man may turn into aRead MoreSlavery and the Civil War1281 Words   |  5 PagesEscaped slaves from the South helped the north to win the Civil War by increasing the number of soldiers fighting in the war for the north and by spying on the south for the north. With the help of escaped slaves fighting the South, the north outnumbered the south in battles, which eventually led to the North’s victory in the Civil War. Escaped slaves form the south also helped the north by spying on the south and reporting to Union officials who reported the information to the Union army. TheRead MoreSlavery And The Civil War1447 Words   |  6 PagesSlavery and The Civil War When most people think of Abraham Lincoln, They remember him as the one President, or the one single entity , who freed the slaves. Most are not aware that before slavery the young nation was going though growing pains there were years of political strife and social upheaval that culminated in to Civil war that actually resulted in the Emancipation of Slaves. Slavery was pivotal to the compromises and conflicts of national politics in the decades leadingRead MoreSlavery And The Civil War1084 Words   |  5 PagesSlavery Slavery was one of the biggest controversies in American history. The beliefs about slavery mostly varied from the North to the South but also varied from state to state and sometimes even among family members. All of these different views caused conflicts to arise in America and slavery soon became a huge contributing factor to the Civil War. The core beliefs of anti-slavery societies differed from those of the slavery societies. Abolitionists believed that slavery was a moral and nationalRead MoreThe Civil War Of Slavery1699 Words   |  7 PagesIn the 1800s the Institution of Slavery became very dominant in the United States, but mainly in the South. Due to the climate and their type of economy, their agriculture productions required a great amount of labor that was performed by the slaves. In the south, â€Å"slavery was key to the way of life†1 the majority of the south relied on the slaves to do all of the hard work for them and maximize the profit of their owners. The northern states however had a different type of economy and did not requireRead MoreThe Slavery Of The Civil War1701 Words   |  7 PagesIn pre-Civil War America, it was a common occurrence to witness Black families torn apart, sold off as property, and treated in hateful, vile manors in the name of a higher God. Many slave owners retained t he firm belief that due to slavery being beneficial to them and the lack of clear-cut condemnation in scripture, it was a divine institution beneficial to both the slave and slave owner themselves. As a result, these ideals led to further enslavement and abuse, exploiting Blacks so that the slaveRead MoreSlavery And The Civil War Essay1963 Words   |  8 PagesSociety relates slavery to the civil war and most would argue that slavery ended in 1865. With this standpoint, we often brush off or neglect to further investigate slavery in its most modern forms. Over the course of history, there are hardly any situations where a social problem was solved. Starvation still exists, as does poverty, racism, war, segregation, injustice within government systems, and yes, even slavery. Human trafficking is modern day slavery and it exists everywhere with two different

Emotion and Music free essay sample

When someone is angry they will usually listen to metal or rock music. 3. Music can change your emotions by what genre youre listening too. 4 3. Third, arrange and re-number the supporting and developing ideas in the most logical order. State the method which you are using to develop the main idea. Rearrangement of Supporting ideas: 1. Music can change your emotions by what genre youre listening too. 2. When people are sad they usually listen to sad songs. 3.When someone is angry they will usually listen to metal or rock music. 4 Method of arrangement: 4. Fourth, state the topic sentence, and write a good clinching sentence. Topic sentence: Music can change people emotions or how they feel based on what their listening too. Clinching sentence: You should be careful what you listen too because it can be harmful or beneficial. 5. Now, finally, write a coherent, unified paragraph based on steps one through four. We will write a custom essay sample on Emotion and Music or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Paragraph:Music can change peoples emotions or how they feel based on what their listening too. When youre in a happy mood you usually listen to upbeat music or music that has a happy vibe to it. When youre upset you listen to sad music or music that has a blue feeling. You can be really happy and you can hear a song that sounds depressing and it can put you in a depressed mood, it effects how you feel or your emotions.

Research Methodology Data Collection and Analysis

Research Methodology This chapter discusses the methodological approaches used by the researcher to collect, analyze and present its research findings. In this case, the study followed a positivist and phenomenological paradigm. The selection of the paradigm determines how the study expresses the underlying research perspective toward how things are connected (Brenda, 2003).Advertising We will write a custom essay sample on Research Methodology: Data Collection and Analysis specifically for you for only $16.05 $11/page Learn More The study’s choice of a positivism and phenomenal approach remain appropriate to the study. This paradigm succeeds in investigating the study scenario in its natural setting to deal with the existing factors affecting children because of the â€Å"No Child left Behind Act.† Data Collection The researcher used a mixed research design in the collection, and analysis of data. The study shall collect quantitative data by administering a survey questionnaire. The survey instrument shall enable the researcher to collect and analyze empirical data to investigate the effect of â€Å"No Child left Behind† Act on children. The collection of quantitative data is appropriate to determining the existence and extent of the relationship between the Act and several strategic effects (Brenda, 2003). The researcher’s choice of a qualitative research design remains appropriate to the study scenario because it allows a researcher to examine the phenomenon in its natural setting during the study. Phenomenological approach enables the researcher to explain factors influencing the factors in the research topic to enable a plausible explanation of the study theory. Instrumentation The researcher collected qualitative data by using focused interviews to assess the effect of the Act on disabled children (Brenda, 2003). The interview shall consist of open-ended questions to give a general insight into the possible effects of the programs under the guidance of â€Å"No Child left Behind† Act. The use of open-end questions is to help the researcher to win first hand confidence of the respondents, and objectivity of the responses (Merriam, 1998). Sampling technique The study utilizes a random sampling approach in selecting the sample of the study. This technique ensures that the research cushions its results from errors of biased source of data.Advertising Looking for essay on education? Let's see if we can help you! Get your first paper with 15% OFF Learn More Data Analysis Qualitative Data Analysis The researcher’s use of thematic analysis to analyze interview findings helps to analyze data drawn from interviews (Merriam, 1998). This approach is based on fundamental trends, patterns of behavior or life exhibited by individuals within their environment. After interview data, the researcher developed patterns related to the data. Later, data cataloguing was used to identify and formulate themes. Pattern grouping was finally done and relationships between groups determined (Merriam, 1998). This gave room for a general assertion that could explain and clarify practices of â€Å"No Child left Behind† Act on disabled children. Quantitative Data Analysis Quantitative research on the other hand, deals with collecting and analyzing numeric data. This form of research entails the use of relatively large-scale data in order to examine or ascertain a social phenomenon through statistical analysis. In this research, the researcher selected a qualitative research design with the view to answer the research question under review. According to Merriam (1998), qualitative research studies things in their natural way or setting, in which the researcher is an integral tool in data collection. Under this approach, data collected is in the form of words, or pictures and the outcome are used as a process and not product. The application of qualitat ive research method in this study was to enable the research to find and develop theories that would explain the relationship between variables through elements of qualitative research (Brenda, 2003). References Brenda, L. (2003). Design research: methods and perspectives. New York: MIT Press. Merriam, S. B. (1998). Qualitative research and case study applications in education. New York, NY: Jossey-Bass Publishers This essay on Research Methodology: Data Collection and Analysis was written and submitted by user Timothy Gomez to help you with your own studies. You are free to use it for research and reference purposes in order to write your own paper; however, you must cite it accordingly. You can donate your paper here.