Page 1 of 50 - About 500 essays
  • Ubiquity of Bacteria

    1755 Words  | 8 Pages

    can only be visualized by the aid of a compound-brightfield microscope. While we generally cannot see individual microorganisms with the naked eye, they are present in virtually every habitat known to man. Microorganisms can be prokaryotic—the bacteria or eukaryotic—the algae, protozoa or fungi. While viruses are acellular they are also studied in the scope of microbiology because they are small and because they infect cells. While most bacterial are unicellular they can also exist in colonial

  • Unknown Bacteria

    4145 Words  | 17 Pages

    Unknown bacteria determined to be Alcaligenes faecalis because of its morphological, physiological and metabolic properties. In a laboratory setting, it often becomes necessary to identify an unknown organism. In this experiment, researchers classified an unidentified bacterium based on its physical structure, colony morphology, optimal conditions and metabolic properties. A Gram stain using crystal violet, iodine, and safranin and a simple stain using methylene blue characterized the organism’s

  • Good Bacteria

    1857 Words  | 8 Pages

    CHAPTER TWO Beneficial bacteria in the environment and their uses. In today’s world, the environment and its related issues are steadily gaining a lot of importance. Some bacteria are helpful and are used to obtain balance in the environment. It has been seen that helpful bacteria are useful in dissolving organic sludge from water, breaking down the growth of algae, reducing the various noxious odours such as hydrogen sulfide odours, reducing ammonia levels, promoting faster growth of fish in the

  • Virus and Bacteria

    1703 Words  | 7 Pages

    Virus and Bacteria Virus - A virus is a capsule of protein that contains genetic material. A virus cannot reproduce on its own; it must infect a living cell to grow. Bacteria - Bacteria are one-celled organisms that live on their own. They can multiply and reproduce by subdivision Bacteria and viruses cause many of the diseases we are familiar with and may sound synonymous; they are greatly different from each other. [pic] o They differ greatly in size. The biggest viruses are only as large

  • Gram Positive Bacteria And Gram Negative Bacteria

    802 Words  | 4 Pages

    Bacteria can be divided into two types of species, gram positive bacteria and gram negative bacteria. To determine whether a certain type of bacteria was classified tests were conducted by Hans Christian Gram; who discovered the differences within the cell walls of the bacteria. Gram positive bacteria have a thick wall which consists of the protein peptidoglycan. This is opposite to gram negative bacteria which has a thin cell wall, which fold over each other (Wells, 2017). They retain a much thinner

  • Antibiotic Resistant Bacteria

    1376 Words  | 6 Pages

    There seems to be an ongoing battle between the evolution of bacteria and modern medicine. This has become a serious problem in hospitals as bacterial resistant infections continue to be on the rise despite the practice of standard precautions that treat all patients as if they have an infectious disease. One of the leading public health threats today is meticillin-resistant Staphylococcus aureus or MRSA. With all of the advancements in medicine, it is hard to believe that we do not have the ability

  • The Common Abundance Of Bacteria

    849 Words  | 4 Pages

    bars indicate oral samples. Faecal bars represent the mean and error bars the standard error (n=31), while oral bars represent the mean and error bars the standard error (n=99). The most common abundance of bacteria in faecal sample were Bacteroides and while the most common abundance of bacteria in oral sample were Streptococcus. The mean of abundance is obtained by summing up the abundance of each taxa and divide it by the total number of samples in each faecal and oral samples respectively. Standard

  • Bacteri Bacteria, And Streptococcus

    1895 Words  | 8 Pages

    Every person has bacteria that inhabit the skin and other body parts. Most of the bacteria are normal and not harmful to the individual. Certain types of bacteria inhabit different parts of the body because of the different resources the environment offers for the various bacteria. There are bacteria that thrive in the skin folds of humans because the moisture level and there is also a high salt level there, for example. The normal flora are opportunistic, and they need a way of entry in order

  • Lab Report : There Is A Bacteria

    842 Words  | 4 Pages

    October 26, 2015 Sydney Hartman BIO 115 Section CJ Sydney Hartman BIO 115- CJ October 26, 2015 Hypothesis: There is a bacteria in pond 22 that is killing the fish. Methods: In this experiment, results were found by discovering the kinds of bacteria found in the given pond water samples. The first step in this experiment was to prepare the pond samples by completing serial dilutions of the pond water to the 10-4. We then had to prepare five separate plates by streaking the 10-4 dilutes. These

  • Observing Bacteria Essay

    1123 Words  | 5 Pages

    Observing Bacteria Kelli Jo Simco Microbiology Due: 2/8/13 Abstract: Microscopes are fragile instruments that must be handle with extreme caution as they can produce high quality results when observing the smallest specimens on earth. A microscope must be properly cleaned before use and storage. The different objectives allow for a range of observations. At the highest objectives, the resolution can easily be lost which is why the oil immersion lens is used to minimize refraction. While