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Transcript of Bacteria
Live? in the soil, water and air;
in animals, plants, rocks Pathogenic
Bacteria What is a Pathogen? any disease-producing agent, especially a virus,
bacterium, or other microorganism. Toxins Poisenous substances produced
by some pathogens Endospores: Botulism Bacteriology . a spore formed within a cell of a rod-shaped organism. a sometimes fatal disease of the nervous system acquired from spoiled foods in which botulism is present, especially improperly canned or
marinated foods. Pasturization V.S. Canning
Which kills more bacteria Pasturization Canning Process in which a liquid is heated to a temperature that kills most bacteria. the act, process, or business of preserving cooked
food by sealing in cans or jars. Show and Caption Antibiotics V.S. Vaccines Antibiotics Vaccines any of a large group of chemical substances, as penicillin or streptomycin, produced by various microorganisms and fungi, having the capacity in dilute solutions to inhibit the growth of or to destroy bacteria and other microorganisms, used chiefly in the treatment of infectious diseases. any preparation used as a preventive inoculation to confer immunity against a specific disease, usually employing an innocuous form of the disease agent, as killed or weakened bacteria or viruses, to stimulate antibody production Which is better? The Bad How does bacteria help us? Bacteria helps us in many ways such as, braking down things like biodegradable things such as a dead tree trunk, or dead animals, so in a way they help out the Earth. Canning is better for killing bacteria The Good, the Bad, and the Ugly Acne Strep Throat Flatulence Body Odor Anthrax Lyme Disease Tetanus Flatulence occurs when a food does not break down completely in the stomach and small intestine. As a result, the food makes it into the large intestine in an undigested state. http://kidshealth.org/kid/grow/body_stuff/acne.html Watch Video About 8 in 10 preteens and teens have acne, along with many adults. In fact, about 17 million people in the United States have acne. Acne is so common that it's considered a normal part of growing from a kid to an adult. Strep throat is a bacterial infection in the throat and the tonsils. The throat gets irritated and inflamed, causing a sudden, severe sore throat. What is Strep throat? What causes strep throat? Strep throat is caused by streptococcal (strep) bacteria. There are many different types of strep bacteria. Some cause more serious illness than others. Although some people are quick to think that any painful sore throat is strep, sore throats are caused by a viral infection and not strep bacteria. A sore throat caused by a virus can be just as painful as strep throat. But if you have cold symptoms such as coughing, sneezing, or a runny or stuffy nose, you probably do not have strep throat. Lyme disease is the most common tick-borne illness in North America and Europe. Lyme disease is caused by the a bacterium. Deer ticks, which feed on the blood of animals and humans, can harbor the bacteria and spread it when feeding. You're more likely to get Lyme disease if you live or spend time in grassy and heavily wooded areas where ticks carrying the disease thrive. It's important to take common-sense precautions in areas where Lyme disease is prevalent. If you're treated with appropriate antibiotics in the early stages of the disease, you're likely to recover completely. In later stages, response to treatment may be slower, but the majority of people with Lyme disease recover Tetanus is a serious bacterial disease that affects your nervous system, leading to painful muscle contractions, particularly of your jaw and neck muscles. Tetanus can interfere with your ability to breathe and, ultimately, threaten your life. Tetanus is commonly known as "lockjaw." Thanks to the tetanus vaccine, cases of tetanus are rare in the United States and the developed world. The incidence of tetanus is much higher in less-developed countries. Around a million cases occur worldwide each year. Tetanus can be treated, but not always effectively. Fatality is highest in individuals who haven't been immunized and in older adults with inadequate immunization — wherever they may live. In countries with low vaccine rates, infants also are at high risk of severe illness and death Anthrax is a serious illness caused by a spore-forming bacterium, Bacillus anthracis. Although anthrax affects mainly livestock and wild game, humans can become infected through direct or indirect contact with sick animals. Normally, anthrax isn't transmitted from person to person, but in rare cases, anthrax skin lesions may be contagious. Prompt treatment with antibiotics can cure most anthrax infections contracted through the skin or contaminated meat. Inhaled anthrax is more difficult to treat and can be fatal. Sweating and body odor can occur when you exercise or exert yourself, you're in a hot environment, or are nervous, anxious or under stress. This type of sweating and body odor is natural and healthy. Sweating is usually only a minor nuisance. The odor probably is more troublesome. Although perspiration is practically odorless, perspiration can sometimes cause an unpleasant smell when it comes into contact with bacteria on your skin Saprophytes: Sewage
treatment plants Most sewage treatment plants receive waste produced by industrial and municipal sources.
After a greater or lesser amount of treatment, depending on the design of the plant, the treated
waste is discharged into a watercourse that eventually leads to the ocean, the final depository
for most sewage wastes initially produced on land. By far the greatest volume of waste
discharged to aquatic and marine ecosystems is sewage. Without treatment, raw sewage
flowing into natural waters will cause pollution. Nitrogen-fixing
bacteria plants Nitrogen is one of the most important chemical elements for plants. If there is not enough nitrogen available in the soil plants look pale and their growth is stunted. Decaying Landfills Using Methane Gas Landfill gas utilization is a process of gathering, processing, and treating the gas to produce electricity, heat, fuels, and various chemical compounds. The number of landfill gas projects, which convert the methane gas that is emitted from decomposing garbage into power. These projects are popular because they control energy costs and reduce greenhouse gas emissions. These projects collect the methane gas, which is released with twenty times the global warming potential of carbon dioxide, and treat it, so it can be used for electricity or upgraded to pipeline-grade gas. These projects power homes, buildings, and vehicles. Making Cheese,
And Sauerkraut Cheese is one of the most varied and fascinating of dairy products. In its most basic form, it is the curdled milk of sheep, goats, cows, or other mammals. Cheese can be found in a wide range of incarnations, from the soft curds of farmer's cheese to the much harder Parmesan, which also includes a hard rind achieved by long curing. It is used in a dazzling array of culinary applications, with various types being called for depending upon the desired effect. Usually, curds are drained and pressed repeatedly to squeeze all the water out. As they start to firm up, the curds turn into fresh or farmer's cheese, which is a soft and easy to spread product with a mild flavor. Cheese Buttermilk Sauerkraut Originally, buttermilk was the liquid left over from churning butter from cultured or fermented cream. Traditionally, before cream could be skimmed from whole milk, the milk was left to sit for a period of time to allow the cream and milk to separate. During this time, naturally occurring lactic acid-producing bacteria in the milk fermented it. This facilitates the butter churning process, since fat from cream with a lower pH coalesces more readily than that of fresh cream. Sauerkraut is a fermented cabbage dish which is often closely associated with Germany, Alsace, and the Netherlands, although China and Korea also make their own versions. When made well, sauerkraut has a characteristically tangy, zesty flavor which some consumers find quite enjoyable. It is often used as a garnish, especially with meats like sausage, and it can also be added to salads, sandwiches, and other foods. Most markets carry sauerkraut. The Good The Bad & The Ugly Tooth Decay and Gum Disease How Do Cavities Form? Abnormal Teeth Four Ways To take care of your Teeth Go to the dentist regularly Brush your teeth Floss Eat healthy foods Plaque Gingivitis Gingivitis is a very common and mild form of gum disease that causes irritation, redness and swelling of your gums. Because gingivitis can be very mild, you may not be aware that you have the condition. But it's important to take gingivitis seriously and treat it promptly. Gingivitis can lead to much more serious gum disease and eventual tooth loss. Dental plaque is a usually a pale yellow, that develops naturally on the teeth. Like any biofilm, dental plaque is formed by colonizing bacteria trying to attach themselves to the tooth's smooth surface. It has been speculated that plaque forms part of the defense systems of the host by helping to prevent colonization by microorganisms which may be pathogenic Bio film: a complex structure that sticks to the surface of a tooth. Ways to prevent Gingivitis Brush Teeth Regular dental checkups Flossing How can bacteria Hurt us? Quiz Tooth demineralization only takes place when a combination of dental plaque (including the bacteria it harbors) and dietary sugars are present. Fortunately, these conditions don't always exist. But each time they do, some tooth damage will occur.