Bacteria

correctly identify two unknown bacteria. Organism number thirteen is Escherichia coli. On the first day, I conducted a gram stain and noticed that the bacteria were pink, meaning that the bacteria are gram negative. I also recognized that the bacteria were rod shaped therefore they were bacillus. I also noticed that the arrangement appeared to be single celled. I also put the bacteria on a streak plate. On the second day, I did another gram stain and the bacteria were again pink and bacillus or…

From the patient, unknown bacteria #618 was identified to be Escherichia coli. It is apart of the Enterobacteriae genus that according to Brown’s Microbiological Applications1 are gram-negative bacteria that usually live inside the intestines of animals and humans. The organism can also live in the vagina and urethra. The data collected after isolating the organism and executing a series of tests have confirmed previous observations of E. coli in past scientific history. For the majority of…

Describe the structure and function of bacteria in comparison to a virus Both bacteria and viruses are mircoogranmisms. Viruses are small obligate intracellular parasites, which by definition contain either a RNA or DNA genome surrounded by a protective, virus-coded protein coat called a caspid. They are classed as non-living because they cannot surive on their own. Conversley, bacteria are single celled livng microbes. The cell structure is simpler than that of other organisms as there is no…

anemone. Another example would be a bacterium and its host. Bacteria present inside organisms play a role in the bodily processes of its host. Over the years, we learn more on just how much symbiotic bacteria, living in a host, can affect the bodily systems and overall development of its host. Élio Sucena, Luis Teixeira and a group of researchers further explore this symbiotic interaction, and how the interaction between a host and bacteria impact the evolutionary processes of both, in a study…

Normal gastrointestinal bacteria have many important functions in humans. Some of them include nutrient metabolism, xenobiotic and drug metabolism, maintenance of structural integrity of the gut mucosal barrier, immunomodulation, and protection against pathogens. Scientists studying the human intestinal tract have discovered that there are over 35,000 microflora species in the human gut. For nutrient metabolism, GI microflora works to get nutrients from the breakdown and fermentation of…

is capable of. Throughout a general basis of identifying an unknown species we must figure out either it will become a gram-positive or gram-negative type of bacteria and in doing so we must do a gram staining method. This method works because it will direct us to what test we can do next based off either it is negative or positive bacteria, which is exactly what I had done for my unknown. These experiments are not just done without a reason; on the contrary, it is very important to identify…

Spotted fever group rickettsioses present a threat to human health worldwide. These bacteria are the cause of potentially fatal febrile illnesses in humans. They are transmitted by arthropod vectors such as ticks, mites, fleas and lice, which are associated with vertebrate host animals including rodents and companion animals. Background Rickettsia are obligate intracellular bacteria that are widely distributed throughout the world, causing both emerging and re-emerging infectious diseases…

All bacteria are lacking of a membrane-bound nucleus and other membrane bound organelles, classifying them as prokaryotes. In the six-kingdom system used by the United States, all bacteria fall into the taxonomic kingdom of either archaebacteria or eubacteria. Bacteria are all unicellular and microscopic regardless of which kingdom they are grouped in. In general, archaebacteria are thought to resemble the first living bacteria on earth and are normally grouped by the climate in which they…

enzymes. One enzyme that they produce in particular is the lysine. Lysins are used majorly to digest the cell wall of bacteria. Bacteria have been increasingly gaining resistance to antibiotics and lysins have been used in animal models to control these specific bacteria. Scientists may need these lysins to stop bacteria from becoming more and more resistant to antibiotics. Bacteria is infected by bacteriophage when it inserts itself into the cell. The lytic system weakens the cell wall…

Where Do Bacteria Grow? I had some prior knowledge about bacteria before conducting the environmental sampling lab. I knew that bacteria could be found in many different places. Also, different types of bacteria grow in different conditions. From prior experience, I remembered that to grow bacteria in a petri dish one must follow the proper technique. I chose to test how much bacteria grows on toilet handle in the bathroom. My prediction for the experiment before it was conducted was that…