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A student attempts to transform a population of E. coli with a pBluescript plasmid. How do you advise him to identify cells that have the plasmid? Answer Plate the cells on a medium containing X-gal. Cells with plasmids will turn blue. Plate the cells on a medium with ampicillin. Cells with plasmids will grow. Plate the cells on a medium with the restriction enzyme EcoRI. Cells with the plasmid will grow. Infect the cells with bacteriophage T3. Cells with the plasmid will transcribe the inserted gene and not be able to grow. Isolate individual colonies and prepare DNA from each. Size the DNA on an agarose gel to see if plasmids are present.
A certain instant camera determines the distance to subject by sending out a sound wave and measuring the time required for the wave echo to return to the camera. How long could it take the sound wave to return to the camera if the subject were 2.68 ..
How do you describe the apparent contradictory finding of spontaneous pain and interference with pain perception in just about the same area.
Do you think that a prenatal test is worthwhile if it detects a genotype, but cannot predict the phenotype? Discuss the risk/benefit issues of this situation.
Who wrote the essay that inspired both Darwin and Wallace to develop the theory of natural selection? What did the essay say?
The DNA genomes of which two cells will be the most similar.
In the motility test, why is it essential that the reduced TTC be insoluble? Why is there less concern about the solubility of the oxidized form of TTC?
Cholesterol increases membrane fluidity in a membrane that otherwise contains mostly long-chain saturated fatty acids. Cholesterol inhibits the crystallization that would otherwise occur in membranes rich in unsaturated fatty acids. Cholesterol de..
Discuss how does column chromatography separate molecules such as DNA and RNA? Explain whyis it difficult to separate large amounts of RNA and DNA using gel electrophoresis?
Which increases the genetic diversity
Describe how hepatitis C will impact the kidneys. Discuss how cryoglobin, antibodies, blood flow and glomerular filtration are affected. Predict urinalysis results.
Before bringing a new drug to the marketplace, extensive testing is done on the drug by administering the drug to large numbers of individuals. Explain the importance of the scientific method, sample size, controls and variable in the drug evaluat..
A study was done for young adults to look at the link between taking a drivers education class and the risk of being in an automobie accident.
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