MRSA or Methicilin Resistant Staphylococcus Aureus is a stash infection or bacterial infection just to be general. Normally staph infections are pretty easy to treat, and most people are prescribed antibiotics to fight this infection. The issue however with MRSA is that the infection is very resistant to the antibiotics normally used to treat it, making it much, much more difficult to treat. MRSA infections are greatly difficult to treat especially in those with weakened immune systems (which is why hospitals, Rehab, and nursing homes have high amounts of such infections), and can quickly go from a bad skin infection to fullbblow sepsis (blood poisoning) and death.
MRSA is a prime example of evolution at work. When doctors prescribe a medication two types of things can lead to resistance; prescription of unessecary antibiotics, or the patient doesn't follow doctors instructions when taking medications. The premise tends to be the same in either case with a slight variation. As Staph bacteria naturally occurs in the skin, if someone is being treated and doesn't have a staph infection, but is taking antibiotics, the staph bacteria actually can developed a resistant strain so that a break in skin actually leads to a MRSA infection. For those being treated for a nonresistant strain, when they don't follow doctors instructions to complete antibiotics even if they are feeling better, there is a reason why you should. Each copy of bacteria is not exactly the same sometimes developing mutations with some being a bit more difficult to destroy, which is why the full course of antibiotics is needed to destroy them. If it is not completed the bacteria that is left will actually replicate causing a full blown resistant infection.
The main issue with MRSA is that it is a common bacteria that has mutated and groan to be resistant to bacteria. Antibiotics are everywhere in Healthcare settings and many people that aren't compliant with medication regimes end up in the hospital for some of the most minor things. However their hospital visit can leave a massive amount of Staphyloccoaus bacteria after their visit, and can hide anywhere. In a normal human we can easily keep these bugs out, but a break in the skin of people who have decreased immune system efficiency (like many of the people that actually need to be in the hospital) when exposed can contract a dangerous infection. This also is advanced by the fact that we don't wash rooms with a powerhose or take a shower after every patient encounter... What I mean is that Healthcare provisera can have MRSA on their skin, without realizing it and if they are uncareful can pass it to those who are susceptible to it.
Answer:
The answer is B.
Explanation:
The question is incomplete, here is the full question:
The process by which vesicles containing solid objects such as bacteria are formed on the surface of a cell for transport into the cell is called
a. pinocytosis
b. phagocytosis
c. exocytosis
d. receptor-mediated endocytosis
e. channel-mediated transport
Although all of the methods given in the options such as pinocytosis, phagocytosis, endocytosis etc are terms describing ways that matters either enter or exit a cell, the transport or taking of a bacteria from the surface of a cell and into the cell itself is called phagocytosis which can simply be described as the cell ingesting the bacteria.
I hope this answer helps.
Answer:
The effectiveness of chemical disinfectants has historically been compared to phenol.
Explanation:
The effectiveness of a disinfectant or antiseptic can be determined in a number of ways. Historically, a chemical agent’s effectiveness was often compared with that of phenol, the first chemical agent used by Joseph Lister. In 1903, British chemists Samuel Rideal (1863–1929) and J. T. Ainslie Walker (1868–1930) established a protocol to compare the effectiveness of a variety of chemicals with that of phenol, using as their test organisms Staphylococcus aureus (a gram-positive bacterium) and Salmonella enterica serovar Typhi (a gram-negative bacterium). They exposed the test bacteria to the antimicrobial chemical solutions diluted in water for 7.5 minutes. They then calculated a phenol coefficient for each chemical for each of the two bacteria tested. A phenol coefficient of 1.0 means that the chemical agent has about the same level of effectiveness as phenol. A chemical agent with a phenol coefficient of less than 1.0 is less effective than phenol. An example is formalin, with phenol coefficients of 0.3 (S. aureus) and 0.7 (S. enterica serovar Typhi). A chemical agent with a phenol coefficient greater than 1.0 is more effective than phenol, such as chloramine, with phenol coefficients of 133 and 100, respectively. Although the phenol coefficient was once a useful measure of effectiveness, it is no longer commonly used because the conditions and organisms used were arbitrarily chosen.
Answer:
Ss
Explanation:
A heterozygote has the DOMINANT (S) and RECESSIVE (s) traits both present
Answer: Option B) No, even though the DNA sequence changed, the sequence still codes for the same amino acid, so no change in phenotype will occur.
Explanation:
Since the triplet codon ACG codes for the amino acid threonine, so also ACA codes for threonine, the single base change of Guanine (in ACG) to Adenine (ACA) is insignificant due to the degeneracy of the genetic code.
Thus, the sequence still codes for the same amino acid, so no change in phenotype will occur
