hypothetical essay involving Koch's postulates.
For the table attached pick one of the gene products, and write a hypothetical Koch's postulates molecur version to identify the gene product as a virulence factor in the infection model, which is also listed on the table.
Write a description of the peptidoglycan recycling pathway.
type 4 secretion and IL-8 production by gastric epithelial cells
describe in detail how a hypothetical type-IV (4) secretion system might lead to IL-8 production by gastric epithelial cells.
What is meant by "detection of peptidoglycan by the host requires prior processing?"
If you inoculate fresh Nutrient Broth with 100 cells of Escherichia coli
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 minu ...continues
6. An 8 gram sample of cream cheese was homogenised in sterile Ringer’s solution to give a total volume of 20 cm3. The homogenate was then serially diluted and 0.2 cm3 aliquots of a number of dilutions were spread plated on duplicate nutrient agar plates. After incubation, the following colony counts were recorded: Dilution R ...continues
LPS - Describe in detail how lipoproteins are secreted to the outer membrane.
1. Describe in detail how lipoproteins are secreted to the outer membrane. How is Sec system involved. What part do β-barrels play in the process? How does the process differ for lipoproteins attached to the periplasmic face of the inner membrane and the outer membrane (Figure 1). 2. Describe in detail the two hypothesi ...continues
Mary set up a similar PCR reaction. The Tm of the forward and reverse primers she uses is 55oC. The conditions that were optimized by her instructor were as follows: Cycle Temperature (oC) Time 1X 94o 3 minutes 30X 94o 30 seconds Denaturation 50o 30 seconds Annealing 72o 60 seconds Extension Mary sets u ...continues
Mycoplasma Variable Surface Antigen (VSA)
1.What is VSA and how does it under go size and phase variation? 2.How does VSA variation affect and is effected by the host immune response? 3.How does VSA variation affect growth and nutrition? What are the benefits and liabilities of the different forms of VSA? 4.What are the roles of VSA forms in biofilms formation and ...continues
What specific cells are infected with HIV-1 and how is this accomplished (specific viral ligands and host receptors)? What is the outcome of infection in the various cell types? Compare and contrast Th1 cells to Th2 cells. Include the cytokines that are produced and the effects on the immune response. How is it hypot ...continues
