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Three Types of Dieters
A sad fact in American society is that thousands of people search for the elusive dream of being thin. On any given day, one finds neighbors, friends, and relatives on some kind of diet. Dieters assume various disguises, but the noteworthy ones are the "bandwagoneer," the "promiser" and the "lethal loser."
Everyone wants to lose weight quickly and effortlessly; therefore, any fad diet promising overnight results becomes the new "call" of the "bandwagoneer." She tries the grapefruit diet or the watermelon diet, but she decides her stomach cannot possibly deal with all of that fruit. The next day the television advertises a new wonder pill that allows the user to lose up to ten pounds in one week, and the "bandwagoneer" answers the "call." Although the magic pill does not produce the desired weight loss, she never gives up hope for a new "wagon" to hitch onto. Once again, this dieter is lured by advertisements of instant spot reduction--liposuction. She crosses over the safety line into a danger zone of unknown procedures, performed by unqualified physicians. Some dieters lose their lives in the search for a beautiful body. The stomach staple is another dieting tool that dieters try. The staple yields a large weight loss, but the dieter endangers her health because of excess loss of body fluids. The "bandwagoneer" is always listening for the newest cure on the dieting market.
A family wedding or a special dance is a logical reason for a woman to decide it is time to take off her few, unwanted pounds; however, decisions made in haste are hard to keep, and the "promiser" soon fails in her attempt. She is the dieter with only fifteen pounds to lose, and, as each year flies by, she decides dieting is harder than eating what she wants to, and much less fun! She promises to lose the extra weight for her ten-year class reunion, but her weight-loss pledge is not kept. Some women become "promisers" during their pregnancies, and they broadcast to all within hearing distance that they will lose the extra pounds as soon as the baby is born. The "tomorrow promiser" and the "Monday promiser" are the dieters with whom most people are familiar and whose excuses they know.
Dansereau, D. 2014. Measuring Microevolution in an Experimental Population of Drosophila. Tested Studies for Laboratory Teaching, Volume 35:430
The fruit fly, or the Drosophila melanogaster, was used in this experiment to study patterns of inheritance. It only takes a fruit fly 14 days to develop from an egg to an adult and then 12 hours before they become reproductive, so these factors made the fruit fly a good species to study, because we had enough time to do crosses. We were investigating the patterns of inheritance in the eye color and the wings. The wild type flies had red eyes and full wings, while the mutant phenotype had brown eyes and no wings. We also had to study the sexes of the flies. The male flies had darker abdominal tips and sex combs on both of their forearms. For the results, my group had predicted as follows:
Many people, like myself, after watching an episode of “The Michael Jay Fox Show,” started to be come curious as to what exactly this disease is. You ask yourself; What is this disease? What causes it? Can it be passed down from generation to generation? Is there a treatment? What would your life be like suffering from this? Through my research on Parkinson’s disease, I am determined to answer these questions. I hope to have a better understanding on this disease, and how it affects the lives of patients that I might see in a hospital.
Obesity has become a growing epidemic in the United States of America. Federal agencies, authors of diet books, and others have offered advice on how to lose weight but none seem to work since the epidemic is still on the rise. In the article “The Feds’ Fib about Low-Fat,” Michael Fumento argues that the low-fat myth government agencies have inadvertently promoted can be deceiving and not healthy for the individual. This article is a syndicated column that has appeared in newspapers around the country, therefore allowing for a diversified audience. The audience of this article includes adults from all over the country who are concerned about the low-fat controversy and adults who are up-to-date on the latest political issues. Fumento claims
The study of nucleic acids has now become a fruitful and dynamic scientific enterprise. Nucleic acids are of unique importance in biological systems. Genes are made up of deoxyribonucleic acid or DNA, and each gene is a linear segment, or polymer, of a long DNA molecule. A DNA polymer, or DNA oligonucleotide, contains a linear arrangement of subunits called nucleotides. There are four types of nucleotides. Each nucleotide has three components; a phosphate group, a sugar and a base that contains nitrogen within its structure. The sugar moiety in DNA oligonucleotides is always dexoyribose, and there are four alternative bases: adenine (A), thymine (T), guanine (G), and cytosine (C). The phosphate groups and the deoxyribose sugars form the backbone of each DNA stand. The bases are joined to the deoxyribose sugar and stick out to the side. Both oligomers, DNA and RNA, consist of 5’->3’ phosphodiester-linked nucleotide units that are composed of a 2’-deoxy-D-ribose (DNA) or D-ribose (RNA) in their furanose forms and a heteroaromatic nucleobase (A, T, G, and C; A, U, G, C), and the resulting oligonucleotide chain is composed of a polar, negatively charged sugar-phosphate backbone and an array of hydrophobic nucleobases. The amphiphilic nature of these polymers dictates the assembly and maintenance of secondary and tertiary structures the oligonucleotides can form. In the DNA duplex structure, genetic information is stored as a linear nucleotide code. This code can be accessed and replicated. RNA, or ribonucleic acid, is another structurally related essential biopolymer. RNA differs from DNA in having the sugar ribose in place of the deoxyribos...
Giacomo Rizzolatti and colleagues were the first ones to observe mirror neurons. In early 1990s, they were investigating neurons in a monkey’s premotor cortex firing as the monkey picked up different object. When one of the investigators picked up a piece of food while the monkey was watching, the monkey’s neurons fired. This led to the discovery of mirror neurons (Goldstein, 2014). Mirror neurons were originally discovered in the ventral pre-motor cortex (area F5) of the monkey’s brain (Sinigaglia & Sparaci, 2010). Although, evidence for mirror neurons in humans is still vague there is still a rich amount of data proving information about the mirror-neuron system. Evidence of this comes from neurophysiological and brain-imaging experiments (Rizzolatti & Craighero, 2004).
With more than 200,000 US cases per year, Parkinson’s disease has become a major part
In this lab we were testing to see how the alleles for certain traits were passed on from parent to offspring. We used an online simulator to cross the flies instead of crossing the fruit flies ourselves because
Parkinson’s disease is a chronic, progressive neurodegenerative disorder characterised by resting tremor, slowed movements, rigidity and postural instability (Casey G, 2013). It is the second most common neurodegenerative disorder after Alzheimer’s (Martin and Mills, 2012). There is a great variability in reported incidence rates, probably due to difference in diagnostic criteria and case ascertainment, with reported rates in Australia and in Western countries ranging from 8.6 to 19.0 per 100,000 population (J Macphee and D Stewart, 2012). The two main brain structures affected by Parkinson’s are the substantia nigra pars compacta, which is located in the midbrain and other parts of the basal ganglia, w...
The path physiology of Parkinson’s disease is the pathogenesis if Parkinson disease is unknown. Epidemiologic data suggest genetic, viral, and environmental toxins as possible causes. Nigral and basal loss of neurons with depletion of dopamine, an inhibitory neurotransmitter, is the principal biochemical alteration in Parkinson disease. Symptoms in basal ganglia disorders result from an imbalance of dopaminergic (inhibitory) and cholinergic (excitatory) activity in the caudate and putamen of the basal ganglia.
Goldmann, David R., and David A. Horowitz. American College of Physicians Home Medical Guide to Parkinson's Disease. New York: Dorling Kindersley Pub., 2000. Print.
Parkinson 's disease is a chronic progressive neurological disorder in which cells are slowly lost in the brain over the years. The fact that cells are lost makes it a neurodegenerative disorder fitting in the same category as Alzheimer disease. A person with Parkinson’s disease can also experience a wide range of physical and psychological symptoms, including depression, constipation, problems sleeping (insomnia), loss of sense of smell (anosmia) and memory problems. ()
"Secondary Parkinsonism: MedlinePlus Medical Encyclopedia." U.S National Library of Medicine. U.S. National Library of Medicine, n.d. Web. 11 May 2014.
Most signs and symptoms of Parkinson disease correspond to one of three motor deficiencies: bradykinesia, akinesia, tremor, and rigidity. The first two qualities are usually present before tremor, but often attributed to aging by the patient and even the physician, and thus the disease is rarely diagnosed until tremor becomes evident much later. An average of 80% of the nigrostriatal neurons may have already degenerated by the time Parkinsonism is diagnosed, which complicates treatment (Fitzgerald, 130). Bra...
The widely popular research on mirror neurons and various applications of the research findings began with an important, but unexpected finding in the brains of macaque monkeys. The original studies did not intend to look at mirror neurons and in fact the existence of mirror neurons was found by accident. Neuroscientist Giacomo Rizzolatti and his colleagues found a group of cells that fired whenever a monkey prepared to act on a stimulus as well as when it watched another monkey act on the stimulus (Winerman, 2005). For example, the monkeys showed a similar pattern of activation when they were performing a simple motor action like grasping a peanut and when they watched another monkey perform the same action (Winerman, 2005). In other words, monkey see, monkey fire -- monkey do, monkey fire. This grouping of cells was called "mirror neurons." The ...