Nutrition for Health and Social Care (DISCUSSION) Assignment

Nutrition for Health and Social Care (DISCUSSION) - Assignment Example One protein is differentiated from another by the sequence of amino acids, and this is responsible for the tertiary structure that defines the function of the protein. The digestion of proteins takes place in the stomach and the small intestines. In the stomach, pepsinogen is secreted from gastric glands and activated by hydrogen ions to pepsin. Pepsin works on long amino acid chains to produce fragments of various sizes referred to as peptides (Protein Digestion & Absorption , 2005). Protein digestion continues in the small intestines where hydrolysis is accomplished by the action of three proteases including procarboxypeptidase, chymotrypsinogen, and trpsinogen (Murray, et al., 2006). Digestion in the small intestines breaks peptides into smaller chains finally resulting into dipeptides and tripeptides (Protein Digestion & Absorption 2005). Individual amino acids that are yielded at the end of the digestion are absorbed through the cell lining the small intestines into the blood stream. After digestion, proteins are used in the body for various functions. About 20 amino acids are yielded after digestions are used to construct proteins for different functions in the body. Proteins are basically used to produce antibodies, for body tissues (production and repair), production of enzymes and storage of products including amino acids. Most of the fats consumed in diet are in the form of triglycerides (Murray, Harper, Granner, Mayes, & Rodwell 2006). Triglycerides are identified by the presence of a backbone, to which fatty acids are attached. Triglycerides are determined by the type of fatty acids attached, and this varies to a large extend (Murray, et al., 2006). There are three types of fatty acids that are classified depending on the number of double bonds in the molecule. The three are identified as Saturates, Monounsaturates, and polyunsaturates (Rose 2013). Polyunsaturates can

Specific Humoral Immunity B Cells Biology Essay

Specific Humoral Immunity B Cells Biology Essay The immune system is also known as the human defence system; it is made up different cells, tissues, proteins and organs which come together to play different roles in protecting the body from pathogens which are brought about by microorganisms such as: bacteria, parasites and viruses. The main cells which support the immune system include: phagocytes (white blood cells) and lymphocytes. In this section of the assignment, I will highlight the main functions of the immune system; looking specifically at how the cells of the immune system deal with infections after injuries and how this immunity is maintained in the bodys system. How the immune system responds to an infection after a cut in the finger: The human immune system responds to an infection after a cut by the process of inflammation. Inflammation is a non-specific defence response where blood and white blood cells called phagocytes are delivered to the hurt area in order to take immediate action against all kinds of pathogens which have invaded the body. After microbes and other external substances have entered the open cut, a blood clot will be produced to seal the wound in order to prevent other microbes from entering. After this barrier is placed forward, the process of inflammation can then take place effectively: Infected cells such as: mast cells and basophils start to produce chemical mediators such as: histamine. When the histamine is released, it helps increase the blood flow by widening the capillaries and arterioles which in turn increase the amount of oxygen and nutrients needed for inflammation to take place effectively. Increased blood flow also means that there will be more tissue fluid due to the pressure; this formation will not only carry the dead tissue and cells, but will allow them to drain away into the lymphatic vessels. Likewise, the increased permeability of the capillary walls allows the antibodies, white blood cells and plasma fluid to break through the walls and into the swelling tissues (tissue oedema). To finalise the healing process, the histamine attracts the white blood cells (phagocytes) sending them to the injured area where they engulf the microbes; some phagocytes, such as the neutrophils will consume them before dying to form a liquid like substance called: pus. In order to clear the area for new growth, the macrophages will also consume and absorb the microbes. How this immunity is maintained: Immunity is maintained by the adaptive response system (specific), where specialised white blood cells (lymphocytes) work with the phagocytes in order to identify specific antigens on the surface of microbes before they have a chance of invading the body. The two types of lymphocytes that play a part in maintaining immunity are: B-cells and T-cells. Just like B-cells, T-cells are generated in the bone marrow, but the only difference is that they develop in the thymus. Being cell-mediated, these cells will detect antigens both outside the blood and inside the cells before eliminating them. Whether on the outside or inside the cell, the macrophage will present the antigen directly to the T-cells as its surface receptor for stimulation. Following this stimulation, the T-cell will differentiate into four specialised cells which all work differently to maintain immunity: Memory T-cells= these act in the same manner as the memory B-cells to ensure that when the same antigen comes around it is dealt with quickly. Helper T-cells= these work with B-cells to make antibodies and produce a chemical called: cytokines which enables killer T-cells and macrophages to do their job properly. Killer T-cells= these attach to the antigen and demolish it. Suppressor T-cells= these turn off the whole process to prevent damaging effects of the immune system. Likewise, the B-cells are made and grown in the bone marrow and being antibody-mediated (humoral), they will secrete antibodies as surface receptors to help detect antigens in the blood and outside cells. When the antigens have been detected, the T-helper cells will work with the B-cells to expand into other functional cells known as: plasma cells and memory B-cells. The plasma cells will secrete antibodies which will in turn attach to the antigens making them targets for the macrophages as antigen presenters to take to the T- killer cells in order to be demolished. For memory and recognition, the B memory cells will ensure that when the same antigen pops up it is dealt with quickly. For example, once someone has recovered from chicken pox, next time this antigen wants to attack the memory B-cells will recognise the antigen and will instruct the bodys defence mechanisms to attack the antigen with the required amounts of T-killer cells; therefore the body would have a fast and effective way of dealing with the chicken pox to maintain immunity. Task 3 (D2) In order to protect the body against pathogens, the immune system responds in two different ways: non-specific (innate) and specific (adaptive). This section examines and contrasts the dexterity and adeptness of the role of each defence mechanism. The innate (normal) defences are known as immediate because they act quickly to help prevent any type of microbe from invading the body. Whereas adaptive (adjusted) defences only target specific pathogens and due to their delayed response they have to first examine the pathogens before taking action. Non-specific defences: Firstly, the non-specific defence mechanism fall into two categories the first and second line of defence. The first line of defence is made up of physical and chemical barriers; the second line comes under cellular defences such as: inflammation and phagocytosis. The first line of defence also known as external, can be split up into: skin, mucous membranes, secretions and natural substances such as: lysozymes and saliva. The skin and mucous membranes have different characteristics which allow them to keep the microbes away from the surfaces of the body. The skin consists of a strong outer layer which is made of different cells in particular cells covered in a protein substance called: keratin and tissues such as: connective and epithelial tissues which all come together to prevent any microbe from breaking into the skin. This process is aided by the secreted antibacterial sweat and sebum on the surface of the skin. In the same way, mucous membranes which contain ciliated tissues secrete a thick substance called: mucus. The mucus found in areas such as: the nose and throat (respiratory system) helps manoeuvre the microbes and other un-wanted substances away from external and internal areas of the body. Also, the natural chemical barriers such as: tears and saliva consist of an antibacterial enzyme called: lysozome which chemically destroys the bacteria. If this first line of defence fails to work, the now internal second line of defence will act immediately to prevent further invasion. The process which responds to tissue damage (inflammation) will release chemicals such as: histamine, which is designed to promote (phagocytosis) by attracting macrophages and neutrophils to the surface of inflammation in order to enhance healing by engulfing the microbes. Although, these lines of defence are ideal for the body, the pain, swelling and heat brought about each time can cause discomfort after the microbes have entered the body. Specific defences: In contrast to this, adaptive defences hold the third line of defence to help maintain immunity. These are categorised as specific: cell-mediated and humoral (antibody-mediated) defences. After the non-specific defence has completed its job, the specific immune system takes on the role of finishing it off; the two types of lymphocytes involved in the neutralising and then killing of the invading microbes are: B-cells and T-cells. Both cells mature in the bone marrow, but T-cells normally activate in the thymus gland. With the help of T-cells (T-helper cells), B-cells will automatically identify the invaders and respond by producing two functioning cells: plasma cells and memory B-cells. The plasma cells will make the antibodies which attach to the antigen, encouraging the T-killer cells to come along and cause destruction. These cells secrete a chemical called: cytotoxic which immediately kills the antigen. As a result, the T-suppressor cells which have differentiated from the T-cells will turn off the whole immune response, clearing away the mess to get ready for the next attack. After this, due to their ability to remember the B-memory and T-memory cells will be able to prepare for the next antigen that comes to attack. Despite all the advantages of this defence system, the time it takes to react against the invaders is longer than that of the non-specific defence system which enhances the chances of infection in the body for example: if the body cant fight that specific virus quick enough it might lead to certain symptoms such as: flu. Also the fact that the pathogens are specific gives a delayed reaction against other pathogens. Conclusion: In conclusion, each defence system works in its own unique way. However, in my opinion the effectiveness of non-specific defence mechanisms over weighs that of specific defences. Although the processes involved in non-specific defences cause discomfort to the body, the immediate reaction against invaders is easily stimulated to protect the body against further infection. The fact that this defence system is constantly fighting external attacks from different pathogens shows how strong and effective it is. Whereas specific defences take longer to act and can only react to specific invaders which might lead to a weakened immunity system due to multiple infections in the body.

The Legalization of Assisted Suicide :: essays research papers fc

The Legalization of Assisted Suicide   Ã‚  Ã‚  Ã‚  Ã‚  Oregon, the Netherlands, and Belgium are the only three jurisdictions in the world that permit assisted suicide and/or euthanasia. Oregon became the leader of the United States in assisted suicide, when the Oregon legislation passed the Death with Dignity Act in 1994, permitting â€Å"physicians to write prescriptions for a lethal dosage of medication to people with a terminal illness† (Department of Human Services). Oregon’s act specifies who is permitted to assist a terminally ill patient in their time of choosing between life and death. But in the event that the United States as a country legalized assisted suicide, who would determine which patients qualified as terminally ill, and who would be permitted to â€Å"assist† these â€Å"terminally ill† patients? With questions still arising as to how and who on a topic such as assisted suicide, one can only prohibit the action until all aspects have been considered, eliminating confusio n.   Ã‚  Ã‚  Ã‚  Ã‚  Assisted suicide is considered as someone providing another person with information, guidance, and/or means to take his/her own life. It is only considered to be physician assisted suicide (PAS) when a doctor is the provider. In many cases it is the physician who assists a current patient with their final wish of ending his/her life, but what about in other cases? In â€Å"Last Right,† by Carrie Carmichael, Carmichael is asked by her best friend if she (Carmichael’s friend) can jump out of Carmichael’s window. While planning out the action, Carmichael began second-guessing, asking, â€Å"Could I sleep in my room after my friend plunged to her death from my window† (Carmichael, 98)? Not only was Carmichael considering her own emotions, and her own life, but she also considered how the action would affect others: â€Å"Nothing to break her fall. But nothing to protect pedestrians either† (Carmichael, 98). When a person who wishes t o commit suicide pursues assisted suicide, not only is that person affecting themselves, but also those people around them. Carrie Carmichael’s friend had been diagnosed with esophageal cancer, prohibiting her from committing suicide via an over dosage of pills. Carmichael’s friend wanted to commit the suicide before she had became too weak to perform the suicide on her own. In Carrie Carmichael’s case, the â€Å"assistance† provided to her friend was limited because Carmichael drove her friend to the hotel where she would leap from the building, in opposition to those people who injected loved ones with medications or provided the medications for over dosage, only to be provoked to suffocate the family member in time of mishap.

Causes and Effects of the War of 1812

Causes and Effects of The War of 1812 The nineteenth century brought major change to The United States turning it from a developing country into a world power. The addition of Alaska, Oregon, Texas, and Florida, the Mexican Cession and The Louisiana Purchase made The United States a world power. The War of 1812 catalyzed this great expansion. There were four main concerns that led to The War of 1812. Maritime and trade issues, the Embargo Act, territorial expansion, and War Hawks. Although they were major concerns, one alone did not start up the war. â€Å"On June 18, 1812, the United States declared war against Great Britain.In what is often called America's second revolution, the countries were locked in a series of battles for more than two years, which led to few gains on either side. It was one of the most unpopular wars in American history; when its treaty was signed on December 24, 1814, diplomats agreed that the countries should return to the situations they were in before t he start of hostilities. † The troubles with maritime and trade issues on the high seas could have been the biggest concern. As America increased in it’s foreign affairs it began to effect Great Britain and France and their on going quarrel.So President Jefferson declared The United States a neutral power. However this tactic did not work because Britain felt anyone trading with France was an enemy. So from 1803 until 1812 Britain impressed approximately 10,000 Americans, forcing them to work on British ships. And in 1805 Britain decided in The Essex Case that any American commercial ship traveling between enemy or neutral ports will be seized. When word of this British interference and impressments of sailors came back to America citizens were outraged and anti-British feelings began to rise.The Embargo Act was signed on December 22,1807 by Congress under President Jefferson. As a result of tension between Great Britain and France and the risk of losing American ships to either side this act was passed to ban all foreign trade. There was talk of amending the Non-Importation Act and The Secretary of the Treasury Albert Gallatin even suggested going into a full out war, but Jefferson failed to see the benefit of a restrictive economic policy like the Non-Importation Act and preferred a peaceful end.Although it was a noble idea to end the tension with a peaceful means, the act failed to make Great Britain and France respect American rights. The Embargo Act ended up affecting everyone at home more than it did Great Britain or France. The economy of The United States started spiraling downward since the act passed, and the smuggling trade began to increase. â€Å"Although it was successful in averting war, news of evasions and other such negative consequences of the Embargo forced Thomas Jefferson and Congress to consider repealing the measure.The American economy was suffering and the American public opinion was not in support of its continuation. U ltimately, the embargo failed to have a significant effect on the British. Goods still reached Great Britain through illegal shipments; British trade was not suffering as much as the framers of the embargo had intended†. The act only had a major effect at home; making Americans furious Britain would not open up free trade. Britain began to see the increasing tension between themselves and the United States, so British officers in Canada began making friends with Indians residing in the Northwest region of The United States.It was easy for Britain to befriend the Native Americans because they felt threatened by Americans and their desire to push westward, and take their land. One of the greatest Indian chiefs in North American history, a Shawnee chief, Tecumseh, prepared to protect their land. He began by traveling the Mississippi valley as far south as Tennessee looking for assistance to create an Indian confederacy strong enough to fight the Americans. He enlisted his brother , Prophet, to begin to unite the tribes of the west to fight against Americans.A disagreement broke out over an American purchase of three million acres of land in Indian Territory. In a battle outside of Prophet’s town of Tippecanoe River, Prophet foolishly decided to attack American militiamen while they were sleeping. The town was torched in the battle that followed, and years of planning and organization was wasted. After this incident in June 1812, Tecumseh and a small company of Native Americans joined the British at Amherstburg. During the war, American’s called for an invasion of Canada mainly because the support the British gave to American Indians.In the Battle of Thames, Tecumseh died and an American victory is gained. The War Hawks were a number of young representatives voted into the twelfth congress. They were typically people from southern and western states like Henry Clay, Speaker of the House at the time, John Calhoun of Kentucky and Langdon Cheves of South Carolina who spoke in Congress advocating going to war with Great Britain. They believed it was our right to expansion, and declared that a thousand Kentucky riflemen could take on Canada alone. They expected the war to be short, considering the British were in Europe fighting Napoleon.Although opposed by the Federalist of New York, New Jersey, and most of New England, on June 18, 1812 James Madison declared war on Great Britain. â€Å"However the War Hawks had displayed much more energy in talking about war than in planning and preparing for war. At the beginning of hostilities there were about 7,000 men in the regular forces and these were commanded by senior officers who were old, incompetent or lacking in experience. Congress had voted for war, but seemed reluctant to spend the necessary funds upon equipment and supplies.A bill introduced into Congress with the purpose of increasing the size of the American Navy was turned down by the members. Volunteer soldiers were bad ly fed and disgracefully clothed. In winter, the unfortunate sentries who patrolled the Canadian-American border shivered and shook on duty because they lacked overcoats. † Some historians say the war hawks are the ones to blame for the war, because they wanted to wage a war knowing the United States military was inadequate at the time. The war ended December 24,1814 with The Treaty of Ghent. Not a single senator voted against peace.Although the war did not have much effect at the time, besides gaining land conquered during battle, the effect of the War of 1812 would become grate. After the war, America gained international respect for resisting Great Britain’s control for the second time in less than forty years. Also, marking the last armed conflict between the two countries. Not only did the war prove the United States military, but also it’s army. It gave The United States battle tested leaders, and the opportunity to train servicemen; which proves to be need ed to expand by land acquisitions from the Spanish-American and Mexican-American Wars.The British blockade leading up to the War of 1812 strengthened the United States economy by requiring workers to manufacture most goods normally imported, diminishing foreign dependence. After the federalist did not support the war and were considered traitors for attempting to secede at the Hartford Convention, the party was destroyed. The end to this party marked an era of Good Feeling for the United States, since they did not have to deal with inter-party disputes. â€Å"Manifest Destiny†, America’s destiny to span from the Atlantic to the Pacific, would not be possible without the courage and wisdom The War of 1812 gave America.The military would not have be what it is today without taking off the way it did after the war, or the nationalism Americans felt and have been able to span the difference between the oceans. Many nations saw how The United States struggled but kept holdi ng on throughout the war to come to a peaceful agreement. By showing this, America became a force to be reckoned with and would prove to be a world power. Bibliography â€Å"American History Timeline- War of 1812. † Accessed November 20, 2011. http://americanhistory. about. om/od/warof1812/a/war-of-1812-timeline. htm Dooley, Patricia L. â€Å"The Declaration of the War of 1812. † The Early Republic: Primary Documents on Events from 1799 to 1820. Santa Barbara, CA: Greenwood, 2004. ABC-CLIO eBook Collection. Web. 27 Nov 2011 â€Å"Embargo of 1807,† Accessed November 20, 2011, http://www. monticello. org/site/research-and-collections/embargo-1807. Volo, Dorothy Denneen, James M. Volo. â€Å"WAR HAWKS. † Encyclopedia of the Antebellum South. Santa Barbara, CA: Greenwood, 2000. ABC-CLIO eBook Collection. Web. 28 Nov 2011. â€Å"War of 1812, 1807. Accessed November 20, 2011. http://www. u-s-history. com/pages/h2621. html â€Å"War of 1812. † Accessed N ovember 20, 2011, http://www. warof1812. ca/intro. html â€Å"War of 1812: Battle of the Thames. † Accessed November 20, 2011, http://www. historynet. com/war-of-1812-battle-of-the-thames. htm ——————————————– [ 1 ]. â€Å"Embargo of 1807,† accessed November 20,2011, http://www. monticello. org/site/research-and-collections/embargo-1807. [ 2 ]. â€Å"War of 1812. † Accessed November 20, 2011, http://www. warof1812. ca/intro. html

History of organic chemistry Essay

Chemistry has been called the science of what things are. Its intent is the exploration of the nature of the materials that fabricate our physical environment, why they hold the different properties that depict them, how their atomic structure may be fathomed, and how they may be manipulated and changed. Although organic reactions have been conducted by man since the discovery of fire, the science of Organic chemistry did not develop until the turn of the eighteenth century, mainly in France at first, then in Germany, later on in England. By far the largest variety of materials that bombard us are made up of organic elements. The beginning of the Ninetieth century was also the dawn of chemistry, all organic substances were understood as all being materials produced by living organisms: wood, bone, cloth, food, medicines, and the complex substances that configure the human body. Inorganic material was believed to come from the Earth: salt, metals, and rock, just to name a few. Because of the human’s wonder of natural life, organic materials were believed to possess an enigmatic â€Å"Vital Force.† Thus organic chemistry was separated from inorganic chemistry, and it became it’s own field of science. By the turn of the Nineteenth the â€Å"Vital Force† theory was immensely discredited, but this branch of science still stayed separated from inorganic chemistry. Back when Organic chemistry was the chemistry of living matter, Professor Wohler succeeded in synthesizing in the labo†¦ The name organic chemistry came from the word organism. Prior to 1828, all organic compounds had been obtained from organisms or their remains. The scientific philosophy back then was that the synthesis of organic compounds could only be produced within living matter while inorganic compounds were synthesized from non-living matter. A theory known as â€Å"Vitalism† stated that a â€Å"vital force† from living organisms was necessary to make an organic compound. 1828, a German chemist Friedrich Wà ¶hler (1800-1882) amazed the science community by using the inorganic compound ammonium cyanate, NH4OCN to synthesize urea, H2NCONH2, an organic substance found in the urine of many animals. This led to the disappearance of the â€Å"Vitalism† theory. Today, chemists consider organic compounds to be those containing carbon and  one or more other elements, most often hydrogen, oxygen, nitrogen, sulfur, or the halogens, but sometimes others as well. Organic chemistry is defined as the chemistry of carbon and its compounds. Organic chemistry is also known under the short-term organic. The organic chemistry as a branch of chemistry can be viewed and engaged in the carbon content. Particularly the structure, composition and the chemical reactions of carbon will be investigated. To the organic chemistry include the elements that go with the carbon compounds. Therefore we understand today as the organic chemistry, the chemistry of carbon compounds, and not focusing only on the compounds from nature. The organic chemistry is, however, also limits for inorganic chemistry. This limit is usually denied to the concept of hydrocyanic acid. The division of natural science in organic chemistry and inorganic chemistry is historical. The term â€Å"organic† was first used by Berzilius about 1810 because by then all investigated compounds derived from living organisms and in the laboratory could not be synthesized. Berzilius found it impossible to produce organic compounds from nature artificial. This theory was refuted, however, then in 1828 by the chemist Friedrich Wohler. In later times it was always more to produce organic substances synthetically, which contained all the carbon. The simplest organic compounds consist only of the elements of water and carbon. Only compounds such as carbon oxides, carbonates, carbides and cyanides are expected to inorganic compounds. Before the nineteenth century, chemists generally believed that compounds obtained from living organisms were endowed with a vital force that distinguished them from inorganic compounds. According to the concept of vitalism (vital force theory), organic matter was endowed with a â€Å"vital force†.[8] During the first half of the nineteenth century, some of the first systematic studies of organic compounds were reported. Around 1816 Michel Chevreul started a study of soaps made from various fats and alkalis. He separated the different acids that, in combination with the alkali, produced the soap. Since these were all individual compounds, he demonstrated that it was possible to make a chemical change in various fats  (which traditionally come from organic sources), producing new compounds, without â€Å"vital force†. In 1828 Friedrich Wà ¶hler produced the organic chemical urea (carbamide), a constituent of urine, from the inorganic ammonium cyanate NH4CNO, in what i s now called the Wà ¶hler synthesis. Although Wà ¶hler was always cautious about claiming that he had disproved the theory of vital force, this event has often been thought of as a turning point.[8] In 1856 William Henry Perkin, while trying to manufacture quinine, accidentally manufactured the organic dye now known as Perkin’s mauve. Through its great financial success, this discovery greatly increased interest in organic chemistry.[9] The crucial breakthrough for organic chemistry was the concept of chemical structure, developed independently and simultaneously by Friedrich August Kekulà © and Archibald Scott Couper in 1858.[10] Both men suggested that tetravalent carbon atoms could link to each other to form a carbon lattice, and that the detailed patterns of atomic bonding could be discerned by skillful interpretations of appropriate chemical reactions. The pharmaceutical industry began in the last decade of the 19th century when the manufacturing of acetylsalicylic acid (more commonly referred to as aspirin) in Germany was started by Bayer.[11] The first time a drug was systematically improved was with arsphenamine (Salvarsan). Though numerous derivatives of the dangerous toxic atoxyl were examined by Paul Ehrlich and his group, the compound with best effectiveness and toxicity characteristics was selected for production.[citation needed] Early examples of organic reactions and applications were often serendipitous. The latter half of the 19th century however witnessed systematic studies of organic compounds, Illustrative is the development of synthetic indigo. The production of indigo from plant sources dropped from 19,000 tons in 1897 to 1,000 tons by 1914 thanks to the synthetic methods developed by Adolf von Baeyer. In 2002, 17,000 tons of synthetic indigo were produced from petrochemicals.[12] In the early part of the 20th Century, polymers and enzymes were shown to be large organic molecules, and petroleum was shown to be of biological origin. The multistep synthesis of complex organic compounds is called total synthesis. Total synthesis of complex natural compounds increased in complexity to glucose and terpineol. For example, cholesterol-related compounds have opened ways to synthesize complex human hormones and their modified derivatives. Since the start of the 20th century, complexity of total syntheses has been increased to include molecules of high complexity such as lysergic acid and vitamin B12.[13] The total synthesis of vitamin B12 marked a major achievement in organic chemistry. The development of organic chemistry benefited from the discovery of petroleum and the development of the petrochemical industry. The conversion of individual compounds obtained from petroleum into different compound types by various chemical processes led to the birth of the petrochemical industry, which successfully manufactured artificial rubbers, various organic adhesives, property-modifying petroleum additives, and plastics. The majority of chemical compounds occurring in biological organisms are in fact carbon compounds, so the association between organic chemistry and biochemistry is so close that biochemistry might be regarded as in essence a branch of organic chemistry. Although the history of biochemistry might be taken to span some four centuries, fundamental understanding of the field only began to develop in the late 19th century and the actual term biochemistry was coined around the start of 20th century. Research in the field increased throughout the twentieth century, without any indication of slackening in the rate of increase, as may be verified by inspection of abstraction and indexing services such as BIOSIS Previews and Biological Abstracts, which began in the 1920s as a single annual volume, but has grown so drastically that by the end of the 20th century it was only available to the everyday user as an online electronic database.[14] The Importance of Chemistry in Everyday Life During laboratory technique 1 we learned how to separate insoluble liquids from solids by means of filtration, and how to separate a dissolved solid from a liquid by means of evaporation. I have often asked myself the importance of some of the required classes in my schedule and how they can relate to everyday life. I believe in the saying that if you don’t use it you will lose it, meaning that if the concepts I learn cannot be applied to something that I will remember on a daily basis then the possibilities of me not remembering them at all are greater. This is especially true if you’re not a science or medical major as I am not. However in this class I am discovering that things we are learning can definitely be applied to processes that my mind uses daily and procedures that are performed daily and are as close to me as my own kitchen. In pondering the idea of filtration and evaporation I begin to think of the water that I drink on a daily basis. Without even being aware of the process I have been using filtration on a daily basis. I purchased a filter for my sink a number of years ago to improve the taste of my water and get rid of what I called the (bad things) that my body didn’t need. At the time I had no idea I was making a scientific decision and using a scientific method. I had determined that the water in my house did not taste well and that the taste could be improved. Listening to others who had boasted about the success of filtered water I decided to test their hypothesis out for myself. I bought from the local hardware store a basic water filter system that could be attached to the faucet of your sink. Supposedly this water filter would remove the harmful substances from my water and improve the taste. I tested the hypothesis by first pouring myself a glass of unfiltered water and sitting it aside. I then attached my filter system and poured myself a glass of filtered water. I tasted both and observed the differences in each taste. The hypothesis was now justified in my eyes, the filtered water tasted better. I offered my hypothesis to my husband and children and allowed them to make their own observations. We all agreed that the filtered water tested better. The hypothesis had now become theory in my household. Now since this class I’ve been observing just how this filter system works. I have discovered that the residue that remains after filtering in some way affected the taste of my regular tap water. I have since learned that this residue consists of salt and other stuff that could definitely dramatically affect the test. Interestingly enough though, this filtration process didn’t start with me. Scientist years ago began to filter water for health reasons. Elements that are deadly to our human bodies (such as chloride) are filtered out daily through our elaborate water system to ensure that our water is healthy to drink. Without this process we would have entire cities dying just like the colony of Jamestown centuries ago! Wow I guess science is a necessary in my daily life, I just never knew that’s what it was called.

Make Carbonated Fizzy Fruit With Dry Ice

Make Carbonated Fizzy Fruit With Dry Ice Use dry ice to carbonate fruit. The fruit will be filled with tingly carbon dioxide bubbles, like a soda. The fizzy fruit is great to eat on its own or it can be used in recipes. Fizzy Fruit Materials Dry iceFruitPlastic bowl You only need two ingredients for this project: dry ice and fruit. Make sure to use  food grade dry ice. There is another kind of commercial dry ice, not intended for use around food or consumption, which may contain icky-tasting and potentially unhealthy impurities. Food grade dry ice is solid carbon dioxide, minus the nastiness. Technically, you can use any fruit for this recipe, but there are some that work better than others. Apples, grapes, oranges and other citrus fruit, and bananas work great. Some people dislike the effect carbonation has on the flavor of strawberries. You may wish to experiment to suit your taste. A plastic bowl is recommended because it isnt likely to get cold enough to handle. There is a small risk of getting frostbite handling the base of a glass or metal bowl filled with dry ice with bare hands. Of course, if you wear gloves or use care, its not a big concern. Carbonate the Fruit You want the dry ice to be in relatively small chunks. If your dry ice came as pellets or chips, youre in good shape. Otherwise, you will need to smash your dry ice. Do this by placing the dry ice in a paper bag or by covering it with a dishcloth and whacking it (gently) with a hammer. You want to break it into pieces, not pulverize it.Dry ice vigorously sublimes into carbon dioxide gas. As this happens, the gas is pushed into the fruit. Thinner slices or pieces of fruit will become more saturated with carbon dioxide bubbles than larger pieces of fruit. You can use whole grapes or strawberries, but be sure to slice or chunk larger fruits, such as apples or bananas. Slicing grapes or strawberries in half opens them up and helps them get fizzier.Place some dry ice pellets in a bowl. Set the fruit on the dry ice. You can add more dry ice if you wish. If you like to play with my food, you can stir the mixture, but its not really necessary. If you want the fruit to get fizzy, but not free ze, place a small cutting board over the dry ice and set the fruit on top of the cutting board. The board should offer enough thermal insulation to protect the fruit. Allow time for the dry ice to sublime (at least 10 minutes). The fruit will freeze and become carbonated.Eat the fizzy fruit, using it in recipes or add it to drinks (makes interesting ice cubes). The fruit will remain fizzy as it thaws, but it should be used (frozen or thawed) within an hour or so because it will lose its bubbles. Fizzy Fruit Safety Tips There are videos that show people carbonating fruit by sealing dry ice and fruit in a plastic bottle. This is not a particularly safe plan since overpressuring the bottle will cause it to explode. If you decide to try this method, make sure your bottle is plastic (less shrapnel in the event of an explosion) and use a minimal amount of dry ice. I do not recommend this procedure. You can get fizzy fruit without risking a trip to the emergency room.This goes along with the first point: dont seal dry ice into a closed container.Dry ice is very cold, so dont handle it or eat it.Freshly frozen fizzy fruit is the same temperature as dry ice (around -109 °F) so allow it to warm a bit before consuming it. Fizzy Fruit Fun Facts Carbon dioxide bubbles, whether they be in soda, beer, or fizzy fruit, trigger a minor pain response in the nerves of the mouth and tongue. This actually enhances flavor and is one reason why carbonated food and drink is (ironically) pleasurable.Carbonation also affects the flavor of food directly by changing its pH. It makes food more acidic. Whether or not this improves flavor depends on the composition of the product.The pH change can also change the color of the fruit. Deeply-colored fruits are often natural pH indicators. Carbonated Fruit Recipe Ideas Slice strawberries, sugar them, and add a bit of water to make a syrup. Stir dry ice into the mixture to carbonate the berries and syrup. Use the carbonated strawberries as a topping for strawberry shortcake or ice cream.Slice apples and strawberries. Carbonate them with dry ice. Add them to champagne.Slice a banana. Make it fizzy then coat it with chocolate. Allow the banana to warm slightly before eating it.If you have leftover dry ice, another fun fizzy recipe to try is dry ice ice cream.

Free Essays on My Trip To Scotland

My Trip to Scotland My trip to St. Andrews, Scotland, was an experience unlike any other experience in my life. Going, I didn’t know quite what to expect. I did expect Scottish life to be somewhat different. However, I was surprised at just how different it was. I had many memorable experiences during my trip to Scotland. I loved just listening to the Scottish people talk; listening to their occasionally incomprehensible accents and their never-ending supply of wonderful tales was mesmerizing. I enjoyed the relaxed lifestyle and kind, fun-loving nature of the Scottish people. I adored the openness and unity in Scotland, and especially how I had to wait for pedestrians to get out of my way at the 1st and 18th holes of The Old Course before taking my next shot. I trembled on the edge of my seat while driving through little Scottish country towns, marked by their beauty and their simplicity, on a tiny road where certain accident seemed to await us at every turn. I was shocked that we, and our rental car, came back in one piece. However, of all of my memorable moments in Scotland, one stands out in my memory as an unforgettable experience, an experience that truly expanded my horizons: playing golf at The Old Course at St. Andrews. The Old Course at St. Andrews is the oldest golf course still being played today. It has played host to many important golf tournaments and the best golfers in history. Simply getting on the golf course to play required extreme cunning and scheming by my astute and determined father. After the lottery system, which determines who gets to play, turned out unsuccessful for our hopeful two-some, my father came up with a brilliant idea. He used his charm, his wit, and his â€Å"I want to take my son out for a good ol’ father and son golfing trip on the most historic golf course in the world† story to persuade the starter to squeeze us into a tee time. It was either that approach or the free Bo... Free Essays on My Trip To Scotland Free Essays on My Trip To Scotland My Trip to Scotland My trip to St. Andrews, Scotland, was an experience unlike any other experience in my life. Going, I didn’t know quite what to expect. I did expect Scottish life to be somewhat different. However, I was surprised at just how different it was. I had many memorable experiences during my trip to Scotland. I loved just listening to the Scottish people talk; listening to their occasionally incomprehensible accents and their never-ending supply of wonderful tales was mesmerizing. I enjoyed the relaxed lifestyle and kind, fun-loving nature of the Scottish people. I adored the openness and unity in Scotland, and especially how I had to wait for pedestrians to get out of my way at the 1st and 18th holes of The Old Course before taking my next shot. I trembled on the edge of my seat while driving through little Scottish country towns, marked by their beauty and their simplicity, on a tiny road where certain accident seemed to await us at every turn. I was shocked that we, and our rental car, came back in one piece. However, of all of my memorable moments in Scotland, one stands out in my memory as an unforgettable experience, an experience that truly expanded my horizons: playing golf at The Old Course at St. Andrews. The Old Course at St. Andrews is the oldest golf course still being played today. It has played host to many important golf tournaments and the best golfers in history. Simply getting on the golf course to play required extreme cunning and scheming by my astute and determined father. After the lottery system, which determines who gets to play, turned out unsuccessful for our hopeful two-some, my father came up with a brilliant idea. He used his charm, his wit, and his â€Å"I want to take my son out for a good ol’ father and son golfing trip on the most historic golf course in the world† story to persuade the starter to squeeze us into a tee time. It was either that approach or the free Bo...