first cholera pandemic occurred in the Bengal region of India starting in 1817 and lasting until 1824. Cholera is now epidemic in many countries. Cholera is a bacterial disease that infects the small intestine and causes diarrhea and dehydration. The bacteria was isolated in 1854 by Italian anatomist Filippo Pacini, but its exact nature and his results were not widely known. Spanish physician Jaume Ferran i Clua developed a cholera vaccine in 1885, the first vaccine to immunize humans against a bacterial
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Cidal agents – ALWAYS KILL * Sepsis and Asepsis * Indicates bacterial contamination * Translated to purid * Asepsis: free from significant contamination * Aseptic technique II. The Rate of Microbial Death: Bacteria usually die at a constant rate. * Death is constant = linear graph * Example is 90% per minute * First few die very quickly * Last few in population will be hard to kill * Very hard to get to zero microbes
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Harvesting solar energy as a source of power Photosynthetic microorganisms, such as micro-algae and cyanobacteria are able to harness low-intensity solar energy and store it as latent chemical energy in the biomass. This energy can then be released via biochemical conversion. The structural and storage carbohydrates in biomass have low energy content and it is necessary to concentrate the energy content further for fuel application. Anaerobic microbial fermentation is an efficient and widely used
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Richard Ching Biology 141 Exam 1 Study Questions 1-15 1. What is the difference between an hypothesis and a scientific Theory? Between an hypothesis and a prediction? What kinds of hypotheses are useful for scientific investigations that try to explain the natural world, and which are not? Give one or more examples of hypotheses that are and are not scientifically useful. A scientific theory is an explanation for a broad class of phenomena or observations, whereas a hypothesis is a testable
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Vincent McConnell BIO 102 research paper- Tinea Pedis (Athlete’s Foot) 9-18-14 Tinea is a fungus that grows and multiplies on people’s skin. This is the cause for ringworm and other common fungal infections. Tinea Pedis is a form of ringworm that affects the feet, also called Athlete’s Foot. This fungal infection is the most common form of the ringworm infection and affects many people daily. It is easily spread through any contact with the infection but luckily it can usually be diagnosed rather
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Journal 1 Example 2/11/14 Journal #1: Techniques for Isolation of Pure Culture * Purpose To effectively separate bacteria into discrete colonies and then transfer each discrete colony from the streak plate to a nutrient agar to isolate the pure cultures. * Materials and Methods *One part Micrococcus roseus and three parts Micrococcus luteus (1) Broth Culture (24- to 48-hours old) containing: *One part Escherichia coli and ten parts Micrococcus luteus
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Tube # 16 Colonial characteristics of the broth (3pts): The morphological unknown colonial characteristics consist of small and round shapes. It forms a shiny texture with entire margins and a convex elevation. In addition, the color is yellow-tan. Gram reaction (5pts): The morphological unknown is gram-negative. Shape (4pts): The shape of the morphological unknown is coccobacillus. For example, the unknown is rod-shaped (Bacillus) yet short and rounded or spherical (coccus). Arrangement
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Respiratory Disease Paper Shonay Williams HCS/245 September 9, 2014 Susan Fahrney Respiratory Disease Paper Pneumonia is an infection of the lungs that can be caused by either a bacteria, a virus, or fungus. The alveoli or (air sacs) fill up with fluid and pus and then become solid. This disease would be considered a tertiary disease. It is classified as a tertiary disease because it is an end result of some other types of infections or illnesses. The flu is one of the main illnesses that
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Technique and Culturing Microbes September 30th Abstract: The purpose of this lab is to learn and gain knowledge about aseptic techniques to collect and transfer cultures, learning about different culture medias and proper temperature to grow bacteria. Materials used: -Incubator made from box, styrofoam pieces wrapped with foil -Thermometer -S.epidermise sample -L.acidophillus -Lamp -Broth MRS-9ml -Broth,Nutrient -Mask -Gloves -10% bleach -Sterile swab stick -Paper towel A
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more common with animals due to animals eat more raw meat then a average everyday person. The bacteria’s survival is based on conditions with very little or no oxygen. The toxin it generates causes the food borne illness. Clostridium perfringens bacteria grows in food after it has been cooked. If foods such as poultry or beef are not cooked at the recommended temperature and not kept at a temperature that is either warmer than 140°F or cooler than 41°F, clostridium perfringens can easily set in.
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