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2025 Fall 2 ENVS 2126E for Melissa Driessnack (Online)
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In a forested watershed with minimal human activity, MST analysis detects widespread wildlife-derived E. coli and Bacteroides. Why might MST be of limited use for regulatory purposes in this case?
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The goal of TMDL's is to ensure that the waterways utilized by people in the US is safe for
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A bioremediation project introduces Pseudomonas aeruginosa carrying a degradative plasmid. After a few weeks, indigenous soil microbes exhibit the degradative trait, even though the original strain is no longer detectable. What is the MOST plausible explanation?
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A rural watershed is experiencing repeated E. coli exceedances, and the community suspects livestock runoff as the source. You are tasked with identifying whether contamination is from cattle or wildlife. Which MST method is MOST appropriate for rapidly confirming the presence of bovine fecal contamination?
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Which of the following is NOT one of the advantages of using tracers in field studies?
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Irreversible adhesion processes include:
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Adhesion is a ________ process with a cell and particle surface>
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A field team is using bacteriophage PRD-1 and potassium bromide as tracers to assess potential contamination from a nearby septic tank. Which result BEST supports the presence of preferential flow paths in the subsurface?
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A university team is comparing MST using human-specific Bacteroides markers and human enterovirus PCR to identify contamination in a popular swimming beach. Which is a key advantage of using the viral marker?
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An environmental microbiologist detects mRNA transcripts of genes involved in denitrification in a wetland soil. What conclusion can most confidently be drawn about the microbes present?
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