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Determining whether clean groundwater has become dirty and what caused any contamination is a complex pursuit. Stephen Osborn and three colleagues from Duke University set out to learn whether drinking water was really being contaminated by nearby hydrofracking. Osborn's team focused on sites in northeastern Pennsylvania and adjacent New York, where the Marcellus shale formation overlies the Utica Shale formation. The sites they tested are indicated in the map below.
Consider alternative methods with which iron levels could be increased.
Double-stranded DNA is a cylinder that is 20A wide and 3.4A longper base pair. E. coli chromosome is a single double-stranded molecule that is 4.6 million bplong.
In which of the following groups has sympatricspeciation been most important?
1) What is the general purpose of photosynthesis? 2) describe the anatomy of a chloroplast and where they are found. 3)What are the sources of carbon, oxygen, and hydrogen in the photosynthetic reaction?
One animal always has extra toes on one of its four feet, but which foot has the extra toes is random. What proportion of males in a population will have extra toes on the right side of its body? (back and front foot of right side)
Design PCR primers to amplify Kringles 2-4 of human plasminogen for directional subcloning into PBluescript. Show the exact sequence where the PCR product is directionally ligated (2 restriction enzymes) into the vector ( don't show all the interv..
What are the experiments and the findings from them that support the hypothesis that specific molecules are involved in thetransition from G2 to M phase. Describe the experiments
Resveratrol has been in the news recently as a possible treatment for obesity. It appears to increase lipolysis and the activity of glycogen synthase, whilst decreasing fatty acid synthesis and the activity of glycogen phosphorylase. How does the ..
If each duct in the system had to be examined to locate the obstruction, explain the sequence in which the ducts would have to be examined, starting with the urethra and termination in the seminiferous tubules.
1. For what specific purpose was gram staining developed for? what is it used for today? 2. Why is the presence of air bubbles a sign of contamination? 3. Why is a gram stain helpful when monitoring bacterial contamination in food or investigating a ..
Escherichia coli can grow in glucose broth both aerobically and anaerobically. When grown aerobically, these bacteria divide every 20 minutes. However, when grown anaerobically they require about 100 minutes to divide. What may account for thi..
How many gametes can be generated from an individual along with the genotype CCDd? Utilize a drawing to display the possible ways homologous chromosomes can orient themselves.
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