Gram-positive bacteria

In this experiment, three strains of tetracycline resistant E. Coli were tested. First, the bacteria were diluted via serial dilution in order to more accurately count and quantify the bacteria. To ensure that the three different strains of bacteria are not cross contaminated, label everything either Farm A, Farm B, or Farm C depending on what is being tested. There are six agar plates for each farm, three of the plates are tetracycline plates (which are labeled) and three are unlabeled. For…

Hankin performed an interesting experiment to test if the antibacterial ‘substance’ in Ganges and Jamuna was volatile in nature. He heated the Ganges and Jamuna water in an open and a hermatically sealed tube (Hankin, 1896 and Hankin 2011- this is the English version of the original French paper translated by gangagen.com). He found that the antibacterial activity was retained when the water was heated in the sealed tube, but was lost in the open tube. Although the exact temperature and the…

because it is an organism that has no nuclear membrane, no organelles in the cytoplasm except ribosomes, and has its genetic material in the form of single continuous strands forming coils or loops (“Classification,” n.d.). S. pyogenes is a gram-positive bacteria cocci in chains and it causes many diseases in humans, making it parasitic (“Classification,” n.d.). For optimal growth for this organism is 37°C, can be incubated between 1-2 days, and have a pH of 7.4 to 7.6. S. pyogenes can live in…

It is important to make an accurate diagnosis in this case as the risk of severe illness and treatment varies between an uncomplicated and a complicated UTI.1 The absent of classical presentation of loin pain and rigors would make acute pyelonephritis very unlikely. She was also haemodynamically stable on examination and showed no signs of urosepsis. Hence, based on this patient’s complaint of dysuria, frequency and suprapubic pain accompanied by urinalysis findings of leucocytes and nitrites;…

industry by finding methods to prolong shelf life of refrigerated and ambient temperature stored food products. One of the common treatments include the usage of nisin, which is one of the most effective natural compounds against the growth of Gram positive bacteria. The objectives of this experiment was to learn experimental inoculation challenge studies in food microbiology; to learn about inoculum preparation, the level of inoculum, and food product inoculation; and to study the effect of…

microbiology lab should offer more suspend machines for student due to the sensitive time consuming of the experiment. In particular, while the student is waiting for their turn in the machine, the chloride salt may over lyses the cell wall of the E.coli bacteria and kills the majority of them, which will affect significantly to the rate of transformation…

aureus and K. pneumoniae. Jassim and Al-Saree (2010) isolated and identified some pathogenic bacteria like S.aureus, P.aeruginosa, E.coli and tested the antimicrobial activity of sericin against these pathogens and concluded that the protein sericin has good antimicrobial properties. The antibacterial activity of erisericin in the representative gram negative (E.coli) and gram positive (S.aureus) bacteria models were observed by Senakoon et al.…

An infection happens when a foreign organism attacks a human body. There are different types of organisms that can cause us harm, for example; Viruses, Bacteria and Fungi. Not all infections are the same; some are mild while some can end up being life threatening. Also, infections can be contagious; they can be transmitted by a variety of ways, for example; skin contact, airborne particles, touching an object that an infected person has touched. One of the very common and effective ways to…

Snakebite envenomation is a neglected threat devastating many years in tropical and subtropical countries like India. India has a worst-case scenario with a high incidence of snakebite. About 216 species of snakes in India but only 52 are venomous from this Indian cobra (Naja naja), Russell 's viper (Daboia russelii), Saw-scaled viper (Echis carinatus), and common krait (Bungarus caeruleus) are most deadly. The majority of snakebites encountered by these snakes therefore called India’s Big 4.…

Syphilis is a sexually transmitted disease (STD). Treponema pallidum is that bacteria that causes syphilis. Treponema pallidum is a gram negative bacteria which is spiral in shape. The virulent strain of T. pallidum was first isolated in 1912 from a neurosyphilic patient by Hideyo Noguchi, a Japanese bacteriologist. Syphilis is a sexually transmitted disease but transmission can also occur between mother and child in utero, this is called congenital syphilis. Syphilis was first discovered in…