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Q1. Health official worldwide are concerned by the resurgence of diseases caused by bacteria that are resistant to standard antibiotics. For example, antibiotics resistant bacteria are now causing an epidemic of TB. Drugs can relieve symptoms in a few weeks, except it takes much longer to halt the infection, and patients are likely to discontinue treatment while bacteria are still present. Why can prakaryotes quickly re infect a patient if they are not wiped out? How may this result in the evolution of drug resistant pathogens?
Q2. The blood pressure gradient from aorta to the capillaries is less than the blood pressure gradient from the arterial end of the capillary to the venous end of the capillary. T/F?
A set of Mendelian crosses involving two traits is performed. The first cross is between a plant with green and wrinkled seeds and a plant with yellow and smooth seeds.
If a person eats contaminated meat from a cow that suffered from mad cow disease, how might that person acquire the disease?
You want 1 L of 100 mu M NaCl, and you have 1 M stock solution. How much of the stock solution and determine how much dH2O will you measure out for this dilution?
You have been given several bacterial strains from various countries around the world. It is thought that all the strains cause the same gastrointestinal illness and are genetically identical.
Would you expect any differences in the sizes of the inserts in the two libraries? in brief explain.
An oligomeric protein has a molecular weight of 153000. A 960 mg sample was treated with an excess of 1-fluoro-2,4-dinitrobenzene(sanger's reagent) until the reaction was complete.
You are tasked with analyzing the transmission of a genetic disease through several generations. Males are indicated by square, females by circles.
Name several of the key investigators who made discoveries important to the development of bacterial genetics and describe the significance of each investigator's work.
How is the segmentation in annelids different that the segmentation in tapeworms? (Hint: think about their structures that go across or through segments. Which group do you find those in?)
It is a great day at the lab. You have identified an E. coli F- strain that cannot grow without biotin (bio-). Unfortunately, the next day a rivaling postdoc "accidently" mixed your strain with another strain ‘X' that cannot grow without arginine ..
Draw a Punnett Square crossing BbRr x bbrr knowing that the genes are loosely linked. Crossing over can occur, butat a relatively low rate.
select a chromosomal disorder from the March of Dimes Foundation Website.
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