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You inoculate an unknown strain of bacteria into a phenol red lactose broth and a nitrate broth. After incubation, you see significant bubbles in the Durham tubes of both tests. Can you record the nitrate result without adding reagents? Why or why not?
The wild type fruit fly, Drosophilia melanogaster, has straight wings and long bristles. Mutant strains have been isolated that have either curled wings or short bristles.
Case Study: A female patient in ER with suspected toxic shock syndrome
why materials move from high to low concentration. Isn't this just a waste of energy.
Explain the chemotaxis system of E.coli and explain how it works to discern chemoattractant levels. Name specific proteins and molecules involved
Which of the subsequent statements is true about phylogeny. The ancestral group frequently has all the synapomorphies of the descendant species.
Describe why an anaerobic indicator strip in an anaerobic environment will revert to blue if it gets wet.
To be able to properly analyze a sample of DNA, you need to have at least 1 ug of the DNA of interest. Assumptions: PCR is run with 30 cycles; Molecular weight of nucleotide = 330 g per mole for a single stranded DNA.
The complete oxidation of one glucose molecule yields thirty or more ATP. Glucose catabolism includes glycolysis, pyruvate oxidation, and the citric acid cycle.
What is the purpose of an uninoculated control tube in a differential test? Should this tube be incubated with the tubes that are inoculated? Why or why not?
Is this organism recovered more frequently as a nosocomial pathogen, as a community-acquired pathogen, or at similar rates in both settings? Elucidate your choice.
Explain why is glycine often found in loops of protein rather than in secondary structures such as beta-sheets and alpha helices?
Sketch another graph showing the response to selection if the heritability, h2, of pesticide resistance is 0.8. Illustrate an experiment that you could use to measure how this population of beetles responds to the selection that occurs when the popul..
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