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Q1. EBV infects B cells and some epithelial cells. EBV enters via the CD21, part of B cell coreceptor.The atypical lymphocytes are characteristic of acute EBV infection. They are mostly T cells, with a preponderance of CD8 cytotoxic T cells. In most individuals, the infection is brought under control but not eradicated because the viral genome persists latently in many B cells. One of EBV encoded proteins is VIL-10, which is very much alike to human IL-10. EBV also stimulates endogenous synthesis of IL-10 and IL-6.
What effect do you think EBV would have on B cell function?
Q2. In Drosophila melanogaster, vestigial (short) wings (vg) are caused by a recessive allele of a gene that independently assorts with the gene pair that influences body hair. Hairy (h) results in a hairy body. A cross is made between fly with normal (wild) wings and hairy body and a fly with vestigial wings and a normal (wild) body. The phenotypically normal F1 flies were crossed among each other, and 1024 F2 flies were reared. What phenotypes would you expect in the F2, and in what actual numbers (not ratios) will you expect to find out them?
White tigers are indicated with unshaded symbols. (As you can see, there was considerable inbreeding in this lineage. For instance, the white tiger Mohan was mated with his daughter). In answering the questions, assume that hite.
A scientist randomly separated a group of 100 lab rats into two groups of 50. One group was fed regular rat chow while the other was fed the same quantity of rat chow with added ddt. Both groups were housed in the same room with the same environmenta..
What is BOD and how is it determined. Dr. Haxton told one of his students, "To move in the bloodstream, fats need the help of phospholipids." What will a good student say.
What phenotypes would you expect in the F2, and in what actual numbers (not ratios) would you be expecting to find them. Describe the process of speciation. Comprise in the discussion the factors that can contribute to the maintenance of genetic isol..
Diploid nuclei of the ascomycete, Neurospora crassa, contain 14 chromosomes. A single diploid cell in an ascus will undergo one round of meiosis, followed in each of daughter cells by one round of mitosis, producing a total of eight ascospores.
Will victim die, or would the scientist have to go back to the laboratory to invent a more effective death-ray. The DNA is consequently isolated and centrifuged in a CsCl2 gradient to yield what type of gradient band(s).
Who was Carl Weigert? What influence did Weigert have on Ehrlich. Other than the acid-fast stain, what other technique may be used to diagnose tuberculosis? What scientist developed this test.
Analyze the data using the chi-squared fit test to determine if the frequencies of phenotypes are what would be expected from this cross.
The client tells nurse that he does not understand what that means. How would nurse explain this in terms the client would understand.
Some wines are marketed as "sparkling" wines. Sparkling wines are considered so because of a dissolved gas that makes them fizzy. Concern what you know about the procedure of respiration to explain the type and origin of this gas.
DNAase is an enzyme that catalyzes the hydrolysis of covalent bonds that join nucleotides together. What will first happen to DNA molecules treated with DNAase.
Calculations must be made assuming that the minimum significant number has four significant digits. If all of phosphorus in a 3.00 gram sample of MgNH4PO4 is extracted and used to make a diphosphorus pentaoxide, what mass of P2O5 could be produced.
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