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Determining Diffusivity of Solutes in a Liquid Compute the diffusion coefficient of a protein macromolecule bovine scrum albumin (BSA) at 23degreeC. Compute the diffusion coefficient of urea in water at 23degreeC. Consider the effective radius of BSA is 50 nm and that of urea is 0.16 nm. The viscosity of water at this temperature is 10-3 Pa-s. Compare these two diffusivities using the fact that BSA has a molecular weight of 67,500 while urea has a molecular weight of 60.1.
Glucose is experimentally synthesized with C-14 at carbon 1, and used as a substrate for aerobic metabolism. Where is the label at the end of glycolysis.
List two possible mutations that might cause this phenotype. Be as specific as possible about the location of mutation. What led physician to make this diagnosis, and what might have caused the sudden attack.
how to Define the terms anabolic steroid. Discuss the potential risks and dangers associated with using steroids and human growth hormone.
How does your answer make clear that why antibiotic resistance evolves so fast. What is the equilibrium frequency of the resistant allele in the absence of methicillin.
What is the total ocean area that (trillion m2) that can be classified as open ocean, that is, ocean that is greater than 960 km from the next land.
In a cross between a purple flowered plant and a white flowered plant, all 73 of the offspring had purple flowers. What are the most probable genotypes of the parent plants.
Compare the effects of this mutation with the effects of cholera toxin.why G-protein linked receptors activate G proteins.
assume that the Nernst potential (across a neurons plasma membrane) for Mg(2+) is a 100+ mv. Calculate the fold concentration gradient for magnesium and explain in which direction it lies across the membrane (more on the inside or outside of the c..
Cleavage of DNA with restriction enzymes provides landmarks and sequence information. How frequently are specific sites found? How many sites are expected? Does this change if the DNA is circular.
At the present we know that over 99 percent of the time, glucose occurs in the closed-ring form. What likely difference between these forms would give chemists a clue that the open-chain form was not present.
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.
The pH of the inner thylakoid space had been measured, as have the pH of the stroma and the cytosol of a particular plant cell. Why will this cause the pH in the thylakoids to be lesser than the pH in the stroma.
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