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Question: Explain the Hershey-Chase experiment. Describe in your own words, as if you were talking to someone with no genetics background, how they used radioactive isotopes to demonstrate that DNA, not protein, is the genetic material. Be sure to include details of the experiment in your explanation.Question: Discuss in detail the two different types of operons found in bacterial genomes (inducible operons and repressible operons) and describe how they work. Then describe the three different forms of prokaryotic genetic recombination discussed in the commentary Prokaryotic Genetic Recombination. Hypothesize how recombination might adversely affect the functioning of an operon such as the lac operon or the trp operon. What might be the metabolic implications for an E. coli cell that experiences a disruption of one of these operons?
Along with phenylpyruvic acid, ammonia is manufactured as a result of phenylalanine deamination. Could you think of a way in which the production of ammonia could be used as an indication of a postiive reaction?
A patient displays the enlargement of lateral and third ventricles, however no enlargement of fourth ventricle. Explain what do you conclude? At the time of a spinal tap of the patient, blood is discovered within the CSF. What does this finding pro..
In Staphylococcus epidermidis, bacillus subtilis and escherichia coli, which one has gram- positive, which one has gram-negative? Also, which organism is the biggest? Which one is the least.
A lab is working on drugs that disrupt cell division and have created drugs that inhibit DNA replication in tumor cells. You, being a curious grad student want to test each drug and figure out which DNA replication enzyme it targets.
Filling out two Punnett squares for a cross between a male with blood type B and a female with blood type AB. Build two Punnett squares and answer the following questions about them.
Summarize the climate changes that have occurred from the past to the present. The masses of the sedimentary rock, the metamorphic rock, and the igneous rock are same.
Case Study: A female patient in ER with suspected toxic shock syndrome
Describing how you would test the hypothesis. Start by examining the living species around you. Ever wonder why the pollinator is attracted to the particular flower.
Explain why are carcinomas more common than sarcomas? Describe your favourite new term or concept from this class in brief.
Compute the change in allele frequency under the island continent model for gene flow under the follwing conditions
The delta G for hydrolysis of the amide group from glutamine is -14.2 kJ/mol at 25C. Compute the keq' for this hydrolysis.
Describe why morphine, pentazocine, and naloxone have very different pharmacological and adverse effects on a patient.
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