Uncategorized

Phenyl-Sepharose resin consists of a phenyl group attached to a matrix of agarose. Suppose you need to use this chromatographic method to separate a mixture of polypeptides consisting of polyalanine, polyserine, polytryptophan and polylysine. Would you apply these polypeptides in a buffer containing high ionic strength or low ionic strength? […]

One-hundred grams of fresh tomatoes were placed in a stomacher and blended for 45 seconds. A 1 mL sample of blended tomatoes was placed in tube containing 9 mL of Trypticase Soy Broth, and incubated at 37C for 24 hours. After the incubation period, 1 L and 10 L loops […]

Questions: Extinction 1) Describe the natural history and unique physical characteristics of the thylacine. What it ate, where it lived and what did it look like? What were the reasons or factors that caused them to eventually go extinct? 2) In your opinion, what could have been done to stop […]

Q. An ecologist studying plants in the desert performed the follow experiment. She staked out 2 identical plots, each of that included a few sagebrush plants and numerous small annual wildflowers. She found the same five wildflower species in roughly equal numbers on both plots. She then enclosed one of […]