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Q. Lecture Whooping Cough Bordetella pertussis is causative agent of whooping cough. Describe the stages of whooping cough and the associated steps in infection. Where and how do the organisms colonize its host? Explain the model systems for studying B. pertussis infection. What are the advantages or disadvantages of each? B. pertussis produces a diversity of virulence factors. What B. pertussis virulence factors are associated with adherence? What evidence has been presented to support the role of these molecules in adherence? Illustrate the structure and function of the toxins produced by B. pertussis. B. pertussis virulence genes are regulated by a series of regulatory elements. What are environmental signals involved in regulating virulence gene expression? What is the dissimilarity between vag and vrg genes? How are BvgS and BvgA involved in regulation of virulence genes? What is a phase variation in B. pertussis and what causes it?
A sample of h2O with a mass of 46 0 grams has a tempeture of -58 0 celsiuse how various joules of energy are necessary to heat the stream of 100 0 celsiuse to 114 o celsiuse if specific heat of steam is 2 01 g celsiuse.
What series could you use to make a beta barrel with twelve antiparallel strands? Write out one repeat of the sequence as follows: M-(your sequence) 12.
Which of the follow was necessary to this confirming experiment. Phosphorus is not present in amino acids in the protein coat of phage.
The characteristic (trait) could be something like coloration pattern, length of the limbs, size of the teeth or beak, or any measurable trait that is inherited.
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..
Dialysis patients, who will have blood withdrawn, dialyzed, then replaced, are always weighed while they enter the facility and then weighed carefully before they leave. What is the most probable explanation for this requirement.
Utilize darwin's theory of evolution by natural selection to explain how a group of ancient mammals couple be the ancestors of a major new group of mammals, the cetaceans.
What trends would they have noticed in Earth's terrestrial vegetation over this period.
How many different combinations of phenotypes could exist of these 7 paired traits . What proportion would be heterozygous in every trait after 2 years.
What fraction of offspring of the cross AabbDd x AaBbdd are expected to have the same phenotype as either one of their parents assume that all three genes are on different chromosomes.
After some week's plants that were transplanted into nonsterile soil exhibited a much higher growth rate compared to the plants transplanted into sterile soil. What would be the most likely explanation for this result.
The membrane vesicles are next washed, the membranes solubilized and the proteins denatured and analyzed by SDS gel electrophoresis and Western blotting using polyclonal antibodies against glycophorin A, an erythrocyte plasma membrane protein.
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