Science
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4,610 Essays on Science. Documents 1,231 - 1,260
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Disease Related to Nutrition: Type 1 Diabetes
Disease Related to Nutrition: Type 1 Diabetes Type 1 Diabetes is most likely to be diagnosed among children and young adults. It occurs when the body does not produce insulin to help turn glucose into energy. Since sugar is the basic fuel for the cells to be energized, the body needs the insulin to help turn these sugars into energy. If the body does not produce insulin, the sugars don’t become energy, the muscles don’t
Rating:Essay Length: 746 Words / 3 PagesSubmitted: January 1, 2010 -
Disintegration of Uranium by Neutrons: A New Type of Nuclear Reaction
On bombarding uranium with neutrons, Fermi and collaborators1 found that at least four radioactive substances were produced, to two of which atomic numbers larger than 92 were ascribed. Further investigations2 demonstrated the existence of at least nine radioactive periods, six of which were assigned to elements beyond uranium, and nuclear isomerism had to be assumed in order to account for their chemical behaviour together with their genetic relations. In making chemical assignments, it was always
Rating:Essay Length: 1,014 Words / 5 PagesSubmitted: April 15, 2010 -
Dissection of a Cow’s Eye
Introduction: In this laboratory, we set out to dissect a cow's eye and identify the different parts of eyes and their function. We were given the procedure to open the eye, as well as a sheet that told us what the components of the eye looked like. Procedure: We started off by removing all of the excess fat and muscle tissue surrounding the eye with a scalpel. After it was removed, we cut into the
Rating:Essay Length: 571 Words / 3 PagesSubmitted: May 31, 2010 -
Dissolution of the Theory of Spontaneous Generation
Spontaneous generation is the belief that some life forms are created from non-living things. It was an accepted theory to explain the creation of living things since the times of the ancient Romans to the early nineteenth century, when people began to become more skeptical of this idea. By the 20th century, spontaneous generation was known to be an incorrect theory. The reason it was known to be incorrect, primarily, was because of four scientists:
Rating:Essay Length: 688 Words / 3 PagesSubmitted: January 31, 2010 -
Distance and Time Writing Activity
Taylor Perego CP Astronomy Mr. King 23 August 2017 Distance and Time Writing Activity The smallest object that I have ever seen was a cell underneath a microscope. I was looking at it in science class in 6th grade so that everyone knew what one looked like up close. If I remember correctly it was a plant cell that we looked at. I had prior knowledge that plants had cells but had never actually seen
Rating:Essay Length: 704 Words / 3 PagesSubmitted: October 16, 2017 -
Distribution, Disinfection and Sterilization of Bacteria
Kesini Casthuri Govindan Student ID: 3130300479 Microbiology Lab report Experiment 3: Distribution, disinfection and sterilization of bacteria Abstract The purpose of this experiment is to understand that the distribution of microorganism is universal in nature including air, soil, water, animals, and human body. Most microbes do not cause diseases and are not poisonous to human. 1. Microorganisms in air Material Agar plate Methods 1. Mark the bottom of one clean plate with name, date and
Rating:Essay Length: 646 Words / 3 PagesSubmitted: January 3, 2018 -
Dna
DNA is a term that has been used in science as well as in many parts of daily life. The general public knows that DNA is a part of our bodies but they may wonder what exactly is DNA? DNA is a term used for deoxyribonucleic acid and it is the genetic material of all organisms, it is the molecule of life and it determines all of our physical characteristics. DNA is present in every
Rating:Essay Length: 1,362 Words / 6 PagesSubmitted: November 20, 2009 -
Dna
Because the original DNA strands are complementary and run antiparallel, only one new strand can begin at the 3' end of the template DNA and grow continuously as the point of replication (the replication fork) moves along the template DNA. The other strand must grow in the opposite direction because it is complementary, not identical to the template strand. The result of this side's discontiguous replication is the production of a series of short sections
Rating:Essay Length: 523 Words / 3 PagesSubmitted: December 15, 2009 -
Dna
Only a small fraction of our total DNA makes us different from gorillas, chimpanzees and other primates. An even smaller fraction makes one person different from the next. DNA Deoxyribonucleic acid and ribonucleic acid are two chemical substances involved in transmitting genetic information from parent to offspring. It was known early into the 20th century that chromosomes, the genetic material of cells, contained DNA. In 1944, Oswald T. Avery, Colin M. MacLeod, and Maclyn McCarty
Rating:Essay Length: 1,005 Words / 5 PagesSubmitted: December 19, 2009 -
Dna
Joe Redner is known as the father of nude strip clubs. Redner is well known through out Florida for opening his strip club Mons Venus. Redner has lived in Florida for over 52 years. Redner grew up in Hillsborough County, and was married, with his children living in the area. He has been quite the activist and has been talked about in many Florida newspapers. He is a self- proclaimed millionaire from all of his
Rating:Essay Length: 313 Words / 2 PagesSubmitted: January 27, 2010 -
Dna
Wednesday, April 4th 2006 By: Jacquelyn Logan Lab Partners: Jessica Amedick Josh Fucinski Jade Gianforte ABSTRACT: Starting with whole onions and then ending with a relatively pure preparation of DNA by isolating it from living plant tissue. By knowing the physical and biochemical characteristics of the genetic material the isolation of DNA is possible. In the first steps of homogenization the lysis medium containing detergent caused the cell membrane to break down and release
Rating:Essay Length: 1,042 Words / 5 PagesSubmitted: March 13, 2010 -
Dna
Presumptive testing is cheap, rapid and often portable, and gives the first indication of whether target substances might be present in a sample. The process can be heavily automated, often using an immunoresponse in combination with fluorescence for detection. It is not legally defensible, but is used to screen out negative results before going on to confirmatory testing, which definitively identifies and measures the amount of specific chemicals. Confirmatory testing is legally defensible but is
Rating:Essay Length: 293 Words / 2 PagesSubmitted: March 16, 2010 -
Dna Analysis
PV92: DNA Analysis PCR Amplification and Gel Electrophoresis Deoxyribonucleic acid is a very important molecule for supporting genetic variation among species. It is a double-stranded molecule held together by weak bonds between base pairs of nucleotides (adenine, guanine, cytosine and thymine), and it encodes genetic information [1]. A large amount of introns (intergenic DNA) can be classified as “non-coding,” and much of it consists of repeated segments [2]. One of these segments is the element
Rating:Essay Length: 451 Words / 2 PagesSubmitted: May 18, 2010 -
Dna by Diet
Week 2-B Assignment: DNA by diet. SC 100 I002 FALL 06 Instructor: Tricia S Keiter February 10, 2007 I found some interesting research done concerning heredity and disease from two scientists at Duke University. They were examining the agouti mice species whom possess a specific gene different from other mice named the agouti gene, making their fur bright yellow and their body composition very obese. This gene also made them susceptible to contracting illnesses such
Rating:Essay Length: 638 Words / 3 PagesSubmitted: November 20, 2009 -
Dna Chips and the Pharmaceutical Industry
DNA CHIPS AND THE PHARMACEUTICAL INDUSTRY INTRODUCTION When future historians look back on the greatest scientific advancements of the 20th century, they will without a doubt focus on only three events: the Apollo Moon landing, the invention of the microprocessor, and possibly the greatest scientific endeavor yet, genomics, the science of identifying genes and how they work in humans. It is possibly not a total coincidence then that two of this centuries greatest advancements have
Rating:Essay Length: 2,752 Words / 12 PagesSubmitted: January 2, 2010 -
Dna Extraction
DNA EXTRACTION In extracting chromatin from the cells of wheat germ there are seven steps to follow. The optimal cell to use would be the polyploidal eukaryotic. Eukaryotes have nucleus membrane-bound organelles, while prokaryotic does not. The polyploidal eukaryotic cell has DNA that is held in the nucleus while the prokaryote has DNA that floats freely around the cell. The DNA of eukaryotes is more complex and extensive than the other. Prokaryote is a bacterial
Rating:Essay Length: 589 Words / 3 PagesSubmitted: November 8, 2009 -
Dna Fingerprinting
DNA FINGERPRINTING DNA fingerprinting is a method of identification that compares fragments of deoxyribonucleic acid. It is a technique used to distinguish between individuals of the same species by using only samples of their DNA. It is also called DNA typing. DNA is the genetic material found within the cell nuclei of all living things. In mammals, the strands of DNA are grouped into structures called chromosomes. Unless dealing with identical twins, the complete
Rating:Essay Length: 729 Words / 3 PagesSubmitted: April 12, 2010 -
Dna Microarrays
By examining where and when genes are expressed in a cell or organism, one can acquire valuable hints to its function, for genes compile the genetic make-up of an organism and exploring the function of genes is helping to uncover the complexity of ourselves and of other forms of life (1). Significant developments have been made in gene monitoring techniques specifically in DNA microarrays which only very recently revolutionized genome expression analysis (1). Despite
Rating:Essay Length: 1,017 Words / 5 PagesSubmitted: February 12, 2010 -
Dna or Deoxyribosenucleic Acid
The use of ?DNA? in police investigations The issue whether DNA should be used in police investigations is widely debated in the community. It is an important issue because it brings to attention the moral and ethical implications of using DNA as an investigative tool. A variety of different options have been put forward about the issue. DNA or deoxyribosenucleic acid is the genetic material in cells specific to the individual (James & Nordy, 2002).
Rating:Essay Length: 900 Words / 4 PagesSubmitted: November 20, 2009 -
Dna Replication - a Historical Perspective
By the end of the 19th century, the first chapter of a powerful new science was all but written. The science was genetics and the critical first chapter concerned the rules, governing transmission of hereditary traits from generation to generation. Genetics is the study of inheritance (heredity) of parental characteristics and of variability of the characteristics of an organism. Variability can occur by genetic change and is in fact the basis of evolution. The first
Rating:Essay Length: 349 Words / 2 PagesSubmitted: May 12, 2010 -
Dna Science
What is genetic testing? How has it, or better yet, how will it affect life as we know it? These are all relevant questions when you are exploring the ever-advancing field of genetic testing. Genetic testing cannot be broken down into one simple definition. It is described differently by many organizations ranging from a DNA based only test to the testing of DNA products such as proteins, chromosomes, and problems with somatic cells such as
Rating:Essay Length: 951 Words / 4 PagesSubmitted: January 1, 2010 -
Dna Synthesis and Repair
DNA Synthesis and Repair DNA replication or DNA synthesis is the process of copying a double-stranded DNA strand, prior to cell division. The two resulting double strands are identical if the replication went well, and each of them consists of one original and one newly synthesized strand. The process of replication consists of three steps, initiation, replication and termination. A newly discovered enzyme is believed to play a key role in maintaining the integrity of
Rating:Essay Length: 254 Words / 2 PagesSubmitted: December 20, 2009 -
Dna Technology
DNA TECHNOLOGY How is DNA technology used in law enforcement? There are many different ways it is used, but it is mostly used to solve crimes. Much like deaths, rapes, or even big robberies. DNA is a way to identify a person by: blood, hair, skin, saliva etc... That is why when people are trying to discover a murderer they are very careful when they are collecting evidence.That is why when something occurs, everything
Rating:Essay Length: 310 Words / 2 PagesSubmitted: April 1, 2010 -
Do Falling Birth Rates Pose a Threat to Human Welfare?
Do Falling Birth Rates Pose a Threat to Human Welfare? The issue of whether falling birth rates pose threat to human welfare is an issue that British economist, Thomas Malthus dwelled upon many centuries ago. Malthus authored Essay on the Principle of Population in 1978. In his essay, Malthus posed his hypothesis that unchecked population growth always exceeds the growth of means of subsistence. Actual population growth is kept in line with food supply growth
Rating:Essay Length: 1,489 Words / 6 PagesSubmitted: April 14, 2010 -
Do Inhaled Corticosteroids Have a Long- Term Effect on Growth and Bone Density in Children ?
Research Synthesis Paper According to American Academy of Pediatrics, “It is estimated that approximately 15 million people in the United States suffer from Asthma. Asthma is the most common chronic illness in children” ( Schlienger 2004). Although inhaled steroids have been established as the preventive treatment of choice, few studies have been conducted to assess the risks of inhaled steroid therapy. Inhaled corticosteroids are absorbed into the systemic circulation, but the extent to which they
Rating:Essay Length: 2,572 Words / 11 PagesSubmitted: November 22, 2009 -
Do Mobile Phones Pose a Serious Threat to People's Health?
The purpose of this case study was to analyze the potential health risks involved with using mobile phones. Mobile phones are considered by many as an essential part of modern day life, from the businessperson who uses the mobile phone as a vital link with the office, to the teenager who has the phone for recreational use. By using mobile phones are we damaging our long-term health just to stay in contact with people? Mobile
Rating:Essay Length: 1,331 Words / 6 PagesSubmitted: March 19, 2010 -
Do Rivers in Humid Areas Reflect Concave Profiles?
Question: Do rivers in humid areas reflect concave profiles? Hypothesis: A graded river or stream is a condition in which the stream of mutual adjustment between the load carried by the stream and the related landscape through which stream flows. This then forms a state that is dynamic and has equal erosion, transported load, deposition, and how much capacity the stream can hold. My prediction of the streams that I have charted is that the
Rating:Essay Length: 547 Words / 3 PagesSubmitted: January 19, 2010 -
Do Things Ever Stop Being Random?
Do things ever stop being random? During a group critique, I was asked if things ever stop being random. I have replied by saying that if one interferes with the way that something develops and controls it then it will stop being random. I gave an example of a tree fence which had all of it’s bunches trimmed at the same length. I explained that each brunch would have followed its own route if one
Rating:Essay Length: 422 Words / 2 PagesSubmitted: April 13, 2010 -
Do You Litter?
Do You Litter? Litter is an important environmental issue. It is amazing that 94%of people identify litter as a major environmental problem and yet people still litter. Carelessly discarded garbage affects every member of society: it causes harm to people and animals, damages our waterways, costs us money and suggests that we do not care for our environment. Fortunately, we can all do something to help prevent and reduce litter. We live in a plastic
Rating:Essay Length: 706 Words / 3 PagesSubmitted: November 26, 2009 -
Doctors Accused of Doing Illegal Stem-Cell Trials Patients in Austria May Have Been Misled
Doctors accused of doing illegal stem-cell trials Patients in Austria may have been misled. Alison Abbott Patients treated outside of clinical trials in the Urology Department (inset) of the Medical University of Innsbruck may not have been insured.Clinical trials led by Hannes Strasser have come under scrutiny by an Austrian ethics committee.MEDICAL UNIV. INNSBRUCK An apparently successful stem-cell treatment for urinary incontinence is now being questioned after it has emerged that clinical trials for the
Rating:Essay Length: 1,193 Words / 5 PagesSubmitted: June 5, 2010