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Question: Assume you are purifying a protein on a weak cation exchanger (pH 7.5) and it comes off at 300mM salt. predict what salt concentraiton (lower, same, higher) the protein would come off if you used a strong cation exchanger. Explain the logic behind your prediction in terms of the differences between a weak and strong exchanger.
Fluorescently labeled annexin V is mixed with each vesicle preparation. The vesicles are washed to remove unbound annexin V and next examined by fluorescence microscopy. Presence of annexin V is detected by green fluorescence, as shown above. What ca..
Why was the discovery of microsphere and coacervates an important contribution to understanding of how life might have originated on earth .
Suppose that you start with a lysogenic strain of E. coli. In this strain, a mutation arises that results in the intracellular repressor level becoming twice as high as it normally would be.
Discuss why is even weak selection still stronger than drift in very large populations at non-neutral loci?
Name the 3 types of chromosomes found in human cells based on the location of the centromere.
Use the momentum balance method and derive the flow rate of a Newtonian fluid flowing across a cylindrical tube driven under pressure of rate change if the tube diameter decreases by half?
Erythropoetin is available as a pharmacological drug treatment. Recently a well-known cyclist was accused of using erythropoietin.
Human Papilloma Virus. Read this review on how HPV controls the expression of its genes and explain to the class how HPV uses splicing and polyadenylation to regulate production of viral proteins.
DNA microarray analysis of patterns of mRNA abundance in different human cell types shows that the level of expression of almost every active gene is different.
Albinism is an autosomal recessive disease. Dimples are autosomal and dominant to no dimples. A normal woman with no dimples marries a man normal man with dimples.
Determine the pathophysiology for intrinsic vs extrinsic asthma? Are they both IgE mediated and Write out the overall chemical reaction of cellular respiration.
If a man with a red-colorblindness (a sex-linked trait) marries a normal woman, would you expect to see trait expressed in their children.
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