11. What are the characteristics of a long term non-progressive (LNTP)? 12. Antibodies are produced by ___ cells of the immune system. 13. What is the "incubation period" for HIV? 14. What opportunistic infection (O.I.) causes blindness? 15. If a person has a negative test for HIV how many months should he/she wait for a ret
Is there a correlation between the speed of a viral infection and its potential mortality? Explain.
Why have vaccines been relatively unsuccessful in stopping AIDS?
Given their approximate diameters, calculate the approximate number of hapatocytes (diameter 20 ìm), bacteria (diameter 1 ìm), virus (diameter 10 nm)
Question: Given their approximate diameters, calculate the approximate number of a. hepatocytes (diameter 20 micrometers) radius=10 micrometers, b. bacteria (diameter 1 micrometers) radius=0.5 micrometers, and c. virus particles (diameter 10 nm, radius=5 nm=.005 micrometers) that can be placed in a single layer, on
What is the interaction that goes on between the Ebola virus and the cells in a human? I need cell/virual interaction. Thanks. Be specific but try to explain it so I can understand too, this is Graduate level. Thanks.
1. If you inoculate fresh Nutrient Broth with 100 cells of Escherichia coli and keep the culture at the optimal temperature of 37°C, assuming the generation time is 30 minutes, how many generations will take place after 7 hours? How many bacteria will be present? Will the number of bacteria continue to double every 30 min
1. Name the five classes of immunoglobulins and their functions. 2. Outline the types of immunity? Which type of immunity produces lifelong immunity? Which type of immunoglobulin is present with this type of immunity? 3. Name four bacterial and four viral diseases, covered in this chapter, for which a vaccine is curren
1) Describe how the mammalian immune system responds to (i) a laceration, such as an injury from falling on a barbed-wire fence, and (ii) a viral infection. 2) Explain how the flu vaccination works and why it has a fairly low success rate.
41. Describe general characteristics of picornaviruses. 42. Define plaque, lawn of bacteria. 43. Define normal and transient microbiota. 44. Compare commensalism, mutualism, symbiosis, and parasitism, and give an example of each. 45. List Koch's postulates and the exceptions. 46. Categorize diseas
Which virus caused this disease and why was the viral culture done after the Gram and acid-fast stain results were obtained?:
A 40-year-old male who was seropositive for HIV experienced abdominal pain, fatigue, and low-grade fever (38°C) for 2 weeks. A chest X-ray examination revealed lung infiltrates. Gram and acid-fast stains were negative. A viral culture revealed the cause of his symptoms: a large, enveloped polyhedral virus with double-stranded D
Why does IgM increase by four fold with west nile virus between acute and four weeks later? Please explain the pathophysiology ie. complement system.
Please confirm correctness of the attached questions. 2. Detergent antiseptics inactivate viruses by a. dissolving the envelope of enveloped viruses. b. Altering the nucleic acid of RNA viruses. c. Disrupting the capsid of all viruses. d. None of the above (A-C) is correct. 3. Interferon's are produced by a. Viru
Looks at how intracellular pathogens inhibit the expression of antigens on the cell surface in order to escape the adaptive immune response. Includes examples.
Looks at the various ways in which pathogens can block the function of cytokines. Includes several specific examples.
Describes how some pathogens evade the immune system by avoiding it as much as possible in areas of the host not subject to strong immunological screening. Includes an example.
A look at how various pathogens emply antigenic variation to evade the adaptive immune response, including specific examples (such as the 'flu).
Argue for or against the statement, "Viruses are alive." As before this is not an opinion question. State your position clearly: Yes, No or Don't Know and support your position with what you know about cells, living things and viruses. The internal structure of many protists is much more complex than that of cells of multi
I am trying to figure out if the protists is engaged in more complex activities than the multicellular organism? I am looking at the difference
Question: Are Viruses alive - is this a true statement? The internal structure of many protists is much more complex than that of cells of multi-cellular organisms. Does this mean that the protist is engaged in more complex activities than the multi-cellular organism? If not, why should the protistan cell be much more complicate
Which of the following statements is NOT true of STDs? a. STDs are extremely widespread. b. STDs are easy to track. c. Billions of dollars are spent every year battling STDs. d. Most people are unaware of the risks and consequences of STDs. Of the 15 million new cases of STDs in the US every year, what percentage of these
10. Can severely damage the brain and spinal cord in ways leading to general paralysis A. AIDS B. Chlamydial infection C. Genital herpes D. Gonorrhea E. Pelvic inflammatory disease F. Syphilis 11. Has no cure. A. AIDS B. Chlamydial infection C. Genital herpes D. Gonorrhea E. Pelvic inflammatory disease F.
We are studying viruses and this was a questions our professor threw out for fun true or false: "The hepatitis A virus has the same RNA nucleotide bases as gorillas." I have read the chapter over and over and cannot figure out the answer and now I am curious to know the answer or how to figure out the answer.
Norovirus and seasonality I was asked to review this review this graph and interpret the results, given the research that is available for Norovirus and long-term care facilities. I know that there is a correlation between seasons and Norovirus (i.e. the winter months- Nov. Dec. Jan. and Feb). However, in this graph ther
A. Explain how the three density peaks in Figure 9-20 are related to replication of the injected DNA. Why is no 32P radioactivity associated with the light peak and why is no 3H radioactivity associated with the heavy peak? B. Does the injected DNA mimic the behaviour you would expect for the chromosomal DNA? C. Why do you thi
I am going over a case study in a book, and am having a bit of difficulty solving this one scenario. Case A young-athletic man in his early 20's is helped into the hospital by his girlfriend. He is feverish and his breathing is labored. The symptoms began about 24 hours ago and seemed to worsen quickly. Triage nurse as
I'm writing a paper on SARS, and I was looking for information concerning the possible hiding location of SARS, it's mutation, and the various genes.
RNA viruses are of two kinds, one simple RNA viruses that cannot reverse transcribe to make DNA, however, retroviruses can reverse transcribe to make DNA
Simple RNA viruses make poor gene therapy vectors. Explain.
How do you prepare lysates that give high titers for virulent phage?
What is the main difference between enveloped and nonenveloped viruses? How does this affect entry of each type of virus into the host cells? Variances are expressed.
Describe the mechanism which lead to the functional diversity of antigen processing and presentation. What is the benefit to the host?