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Free research papers and essays on topics related to: bacterial

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  • Bacterial Resistance - 637 words
    Bacterial Resistance Bacterial resistance is a problem that has profoundly impacted the medical community. Bacterial resistance results when bacteria become resistant to individual antibiotics through the development of specific defense mechanisms which render the antibiotic ineffective. This problem has become evident in recent years as numerous cases have been reported in which antibiotics are not effective against the bacteria that they have fought off for years. The recent troubles with bacterial resistance have caused panic throughout the United States. The pharmaceutical industry hasnt been producing many antibiotics because they thought that the antibiotics they had created had solved ...
    Related: antibiotic resistance, bacterial, resistance, pharmaceutical industry, over time
  • Leprosy Is A Chronic Bacterial Disease Of The Skin, Nerves In The Hands And Feet And, In Some Cases, The Lining Of The Nose L - 326 words
    Leprosy is a chronic bacterial disease of the skin, nerves in the hands and feet and, in some cases, the lining of the nose. Leprosy is a rare disease in the United States. Anyone can get leprosy, but children seem to be more susceptible than adults. It is not clear how the leprosy germ is spread, but household and prolonged close contact is important. The germs probably enter the body through the nose and possibly through broken skin. The germs get in the air through nasal discharge of untreated lepromatous patients. Tuberculoid leprosy symptoms are a few well-defined skin lesions that are numb. Lepromatous leprosy symptoms are a chronically stuffy nose and many skin lesions and nodules on ...
    Related: bacterial, chronic, leprosy, lining, nose
  • Sexually Transmitted Diseases - 875 words
    A major question facing many teenagers is whether or not to have sex. A result of having sex is contracting sexually transmitted diseases. Sexually transmitted diseases, or venereal diseases affect 10 to 12 million Americans each year. (Daugirdas 75) In the United States, sexually transmitted diseases strike an average of one person every 1.5 seconds. (76) About half of STD patients are under the age of twenty-five. (Landers 45) Nearly 2.5 million teenagers are infected with these deadly diseases. (Welsh A-5) A few types of sexually transmitted diseases are gonorrhea, herpes, chlamydia, syphilis, etc. These diseases can be fatal if not attended to. In addition to those epidemic diseases alre ...
    Related: sexually, sexually transmitted disease, sexually transmitted infections, transmitted, transmitted diseases
  • Acid Rain - 1,774 words
    Acid Rain What is acid rain? Acid rain is the term for pollution caused when sulfur and nitrogen dioxides combine with atmospheric moisture. The term 'acid rain' is slightly misleading, and would be more accurate if deemed 'enhanced acid rain', as rain occurs acidic naturally. Acidity is measured on what is know as the pH scale. Fourteen is the most basic, seven is the most neutral, and zero is the most acidic. Pure rain has a pH level of 7, which is exactly neutral. The acidity of rain is determined by the pH of pure water in reaction with atmospheric concentrations of carbon dioxide, resulting in carbonic acid. These particles partly dissociate to produce hydrogen ions and bicarbonate ions ...
    Related: acid, acid rain, rain, electric utilities, major change
  • Acid Rains - 540 words
    Acid Rains Acid rain refers to all types of precipitation--rain, snow, sleet, hail, fog--that is acidic in nature. Acidic means that these forms of water have a pH lower than the 5.6 average of rainwater. Acid rain kills aquatic life, trees, crops and other vegetation, damages buildings and monuments, corrodes copper and lead piping, damages such man-made things as automobiles, reduces soil fertility and can cause toxic metals to leach into underground drinking water sources. Rain is naturally acidic because carbon dioxide, found normally in the earth's atmosphere, reacts with water to form carbonic acid. While "pure" rain's acidity is pH 5.6-5.7, actual pH readings vary from place to place ...
    Related: acid, acid rain, carbon dioxide, bodies of water, dioxide
  • Acne - 597 words
    Acne Almost everyone has acne at one time or another in life. Acne is a skin condition that can cause pimples such as, white heads and black heads to appear on the face, chest, back, neck, and shoulders. Most teenagers have acne for about five years, but for others it clears up much faster. Not only teenagers go through acne, but women that did not experience acne during puberty, can also get acne in there twenties and thirties. Women can also get minor acne before there menstrual period. All of us are affected by acne at one point in time or another, and some less than others, but all of us experience it and just have to deal with it because the best remedy for getting rid of acne is time. ...
    Related: acne, peroxide, wash
  • Aging Theories - 1,767 words
    ... ter a certain number of divisions, the clock genes are triggered and may produce proteins responsible for cell destruction (Keeton, 1992, 50). Cellular Aging In 1961, a discovery made by Leonard Hayflick showed that normal, diploid cells from such continually Areplaced@ parts of the body as skin, lungs, and bone marrow, divide a limited number of times. Although the cells stop dividing at the point just before DNA synthesis, they do not die. The longer-lived the species, the more divisions the cells undergo. As the age of an individual increases, the number of potential divisions decreases (Ricklefs and Finch, 1995, 29). This discovery was found using fibroblasts, or cells found in the c ...
    Related: aging, aging process, bone fracture, concise encyclopedia, testosterone
  • Aids - 1,103 words
    Aids Aids Acquired Immune Deficiency Syndrome (AIDS), suppresses the immune system related to infection with the human immunodeficiency virus (HIV). A person infected with HIV gradually loses immune function along with certain immune cells called CD4 T-lymphocytes or CD4 T-cells, causing the infected person to become vulnerable to pneumonia, fungus infections, and other common ailments. With the loss of immune function, a clinical syndrome (a group of various illnesses that together characterize a disease) develops over time and eventually results in death due to opportunistic infections (infections by organisms that do not normally cause disease except in people whose immune systems have be ...
    Related: aids, deficiency syndrome, human immunodeficiency, acquired immune, bacterial
  • Aids In Detail - 2,125 words
    ... ne anonymous partner per year. Homosexual men have higher rates of sexually transmits diseases than heterosexual men and women because gay men tend to have larger numbers of different sexual partners, more often engage in furtive (anonymous) sexual activities, and more frequently have anal intercourse. PUZZLING SYMPTOMS Any theory of the new disease also had to account for a puzzling factor: the variety of symptoms seen in AIDS patients before they entered the final phase of complete susceptibility to opportunistic infections and cancers. Interviews with AIDS patients revealed many had been very sick for up to a year before they developed their first case of Pneumocystis pneumonia or sho ...
    Related: aids, life expectancy, men and women, hepatitis a, discovery
  • Anthrax - 386 words
    Anthrax Anthrax is caused by the bacterium, Bacillus Anthracis and is a disease of sheep, cattle, horses, goats, and swine. Human infection is rare, but it is an occupational disease of farm workers, and veterinarians. The disease has a skin form and a pulmonary (lung) form. In the pulmonary form, infection is spread by breathing in the spores that germinate and cause pneumonia. The pneumonia develops rapidly and leads to progressive respiratory problems. In this form death can come to the infected with in 48 hours. Anthrax is a very serious infectious bacterial disease. The anthrax bacteria may be ingested through and animals water or food. Insects biting into an animal could also spread it ...
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  • Antibiotic Resistance In Bacteria - 724 words
    Antibiotic Resistance In Bacteria For about 50 years, antibiotics have been the answer to many bacterial infections. Antibiotics are chemical substances that are secreted by living things. Doctors prescribed these medicines to cure many diseases. During World War II, it treated one of the biggest killers during wartime - infected wounds. It was the beginning of the antibiotic era. But just when antibiotics were being mass produced, bacteria started to evolve and became resistant to these medicines. Antibiotic resistance can be the result of different things. One cause of resistance could be drug abuse. There are people who believe that when they get sick, antibiotics are the answer. The more ...
    Related: antibiotic, antibiotic resistance, bacteria, resistance, papua new guinea
  • Antibiotics - 560 words
    Antibiotics Antibiotics are chemical compounds used to kill or inhibit the growth of infectious organisms. Originally the term antibiotic referred only to organic compounds, produced by bacteria or molds, that are toxic to other microorganisms. The term is now used loosely to include synthetic and semisynthetic organic compounds. Antibiotic refers generally to antibacterials; however, because the term is loosely defined, it is preferable to specify compounds as being antimalarials, antivirals, or antiprotozoals. All antibiotics share the property of selective toxicity: They are more toxic to an invading organism than they are to an animal or human host. Penicillin is the most well-known anti ...
    Related: bacterial cell, amino acids, nucleic acids, classified, chromosome
  • Antibiotics And Children - 1,429 words
    Antibiotics And Children A very important issue concerning the children of today is the excess prescribing of antibiotics and the dangers that are being created. Everyday, more and more children are being prescribed any easy solution to a very tough problem. There is a constant push from pharmaceutical companies, parents, and massive marketing companies to try the next antibiotic remedy, but as we look towards the future and the diseases that can be created by this quick fix, we should turn to our attention to alternatives remedies. What is so terrible about this situation is that the worst-case scenario of the effects of the mass doses of antibiotics they ingest is an untreatable bacterium ...
    Related: drug administration, immune system, bubonic plague, letting, pneumonia
  • Automobile Emissions - 1,899 words
    Automobile Emissions Pollution from automobile emissions has become over the past few decades an issue of great concern. With a growing number of motor vehicles on our roads great concern has been attributed to the effects of these emissions to our health and to the environment. Several of the gases emitted, which when present in certain concentrations in our atmosphere can be toxic, therefor these ultimate concentrations must never be achieved. Strict legislation as well as sophisticated control technology has been implemented in the automotive industry in order to limit the pollution caused. These aspects of automotive pollution shall be further discussed in this paper. KEYWORDS: Pollution ...
    Related: automobile, emission control, term effects, health effects, hemoglobin
  • Bacteria Are Often Maligned As The Causes Of Human And Animal Disease Like This One, Leptospira, Which Causes Serious Disease - 793 words
    Bacteria are often maligned as the causes of human and animal disease (like this one, Leptospira, which causes serious disease in livestock). However, certain bacteria, the actinomycetes, produce antibiotics such as streptomycin and nocardicin; others live symbiotically in the guts of animals (including humans) or elsewhere in their bodies, or on the roots of certain plants, converting nitrogen into a usable form. Bacteria put the tang in yogurt and the sour in sourdough bread; bacteria help to break down dead organic matter; bacteria make up the base of the food web in many environments. Bacteria are of such immense importance because of their extreme flexibility, capacity for rapid growth ...
    Related: bacteria, food poisoning, carbon dioxide, organisms, streptococcus
  • Bacteria Outline - 1,338 words
    Bacteria Outline Bacteria - Oldest, structurally simplest, most abundant forms of life - Only organism with prokaryotic cellular organization - The only members of the kingdom Monera (4800 different kinds) - Characteristics change depending on growth conditions - Maintenance of life depends on them - play vital role of productivity and as decomposers - Capable of fixing atmospheric N for use by other organisms - Used in production and fermentation of various food and as antibiotics and is being tested for insect control - Prokaryotes vs. Eukaryotes - Multi-cellularity - All bacteria fundamentally single celled - Sometimes cells adhere within a matrix to form filaments - Activities of bacteri ...
    Related: bacteria, outline, food poisoning, flowering plants, acid
  • Bacteria Reproduction - 916 words
    Bacteria Reproduction Bacteria are microscopic singular celled organisms grouped in the prokaryote kingdom. They have a seemingly simple internal structure but that is not so the internal structure of a bacterium is quite complicated . Bacterial growth is generally studied in cell cultures by "visible count" estimation which shows an apparent growth curve. (Stephenson 50) The growth curve shows the stages of bacterial growth within a cell culture. (Thimann 623). Bacteria can survive in a number of different extreme environments from extreme heat to little water. Bacterium have a internal structure that is more complicated than it seems at first. The first part of the bacterium is the plasma ...
    Related: bacteria, reproduction, salt lake, different stages, metal
  • Biodiversity - 1,177 words
    Biodiversity Diversity Essay American biologist R. H. Whittaker in 1959 described a classification system of five primary kingdoms: plants, animals, fungi, protists, and monera. Kingdom animalia cover all taxonomic kingdom all living or extinct animals, an example of an animal is a human. Humans thrive off of one thing or another in each of the five kingdoms. The monera kingdom is the lowest division of rhizopods. Bacteria belong to this kingdom. There are many useful and harmful bacteria in the human body including those that are similar to amoebas. They dont have a nucleus. Plantae consist of all living or extinct plants (Plantae, kingdom Plantae, plant kingdom) the taxonomic kingdom that ...
    Related: biodiversity, humans evolved, animal kingdom, north america, specialized
  • Biological Viruses: All Time Enemies - 1,170 words
    Biological Viruses: All Time Enemies First came fever. Then Hamid Mansaray, a young nurse's aide at a remote African hospital, began to hemorrhage. Blood erupted from his nose and mouth. It burst out of capillaries beneath his skin and eyes. By the time I reached the village of Panguma in Serria Leone, Mansaray lay isolated in a special ward. Doctors had diagnosed an obscure illness called Lassa fever. Its cause was a virus, an infective agent so small that 100,000 of them clumped together would still scarcely be visible. Viruses are little more than bundles of genes - strands of DNA or RNA, the molecules that carry the blueprints for all life. Yet viruses are far from simple. They invade ar ...
    Related: biological, white blood cells, yellow fever, common cold, contracts
  • Biological Viruses: All Time Enemies - 1,132 words
    ... a rash of fluid-filled blisters that begin as red spots covering most of the body and the inside of the mouth. The disease is dangerous to newborns, to people first infected in adulthood, and to those in whom the virus remains dormant in nerve cells, erupting as the more painful and sometimes chronic zoster (shingles) later in life. VZV is a member of the Herpes virus family, which also includes the causative agents of infectious mononucleosis, roseola, and oral and genital herpes (Microsoft Encarta 96 Encyclopedia). An extremely contagious viral disease, chiefly of children, characterized by early fever, an eruption of papules and vesicles, and mild constitutional disturbances. In most ...
    Related: biological, hepatitis b, drinking water, microsoft corporation, tube
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