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1. Compare and contrast the toxicokinetics of AsV and arsenobetaine. Consider each of the four components of toxicokinetics (i.e. Absorption, Distribution, Metabolism, and Elimination 2. Explain whether Paracelcus' concept "It's the dose makes the poison" is applicable to our current knowledge of arsenic toxicology. Hint: Do the effects of arsenic have thresholds
Which enzyme charges at tRNAmolecule with the appropriate amino acid? An alpha helix and a beta-pleated sheet aretypes of, Ribozymes in the large ribosomal subunitcatalyze peptidyl transferase activity during elongation. What isthe immediate result?
The binomial name of an organism consists of the names of which two classification categories. Smoking, air pollution and altitude all affect the rate of respiration. Explain the effects of each of these on respiration and Why.
Why is it likely that this protein(glycophorin) cannot slip out ofthe membrane and dissolve in the cytoplasm of the cell or in theextracellular fluids?
Cells have several mechanisms to prevent the production and accumulation of truncated protein fragments. To illustrate why these fragments can be deleterious, consider a transcriptional activator protein called Groovy that binds to an enhancer ele..
Why are anaerobic sulfate-reducing or metal-reducing prokaryotes important in bioremediation study?
Explain the central dogma of biology? What is the RNA world hypothesis? If you mix all the macromolecules required for cell metabolism (lipids, carbohydrates, proteins, RNA, DNA), will you utilize a living cell? Justify your answer, give a referen..
Compare the recipes of nutrient agar and HE agar. If an organism can grow on both media, on which would you expect it to grow better? Why?
Loss of 15q 12, the PWS/AS region produces different symptoms depending on the parent of origin. PWS results from the loss of paternal copies of this region. Deletion of the same region on the maternal chromosome causes AS.
Rifamycin and actinomycin D are two antibiotics derived from bacterium Streptomyces. Rifamycin binds to b subunit of E. coli RNA polymerase and interferes with formation of the first phosphodiester bond in the RNA chain.
Suppose that the following phenotypic classes were obtained in a test-cross: AB 987; Ab 999, aB 782 and ab 856. Using the chi-square test, what is the probability that the difference from expectations (1:1:1:1) is due to chance?
Researchers analyzed rates of twin births in the Sami population of Northern Scandinavia during the 18th and 19th centuries.
How are protozoa living in the human bowel different from those that move into the urogenital membranes?
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