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2025 Fall 2 ENVS 2126E for Melissa Driessnack (Online)
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Which statement exemplifies the microbial loop concept?
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Phylogenetic analyses of marine prokaryotic diversity in both shallow and deep-sea marine sediments have found that both types of sediments are dominated by ______.
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Aquatic Microbial Habitats::Match each aquatic habitat with its description.
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A limnologist is studying a stratified lake in the summer. She observes that oxygen levels in the deeper water are nearly absent, while the surface remains oxygen-rich. However, microbial activity is still present at deeper depths. Which microbial process is MOST LIKELY dominant in the anoxic layers of the lake?
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Cells within a biofilm excrete an adhesive matrix primarily composed of ________.
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The earliest stromatolites were probably formed by _______.
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Microbes in biofilms often demonstrate _______ antibiotic ______.
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Methanotrophs use this for a source of carbon.
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You are studying a highly transmissible respiratory virus that readily infects humans and dogs, there is also no known treatment or vaccine exist for the virus. The viruses can cause lethality in about 30% of infected individuals, which of the following is an appropriate biosafety approach?
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A group of scientists is studying microbial survival in aerosols under different environmental conditions. They expose a bioaerosol containing Gram-negative bacteria to various humidity levels and observe rapid inactivation at high relative humidity (>80%). What is the MOST LIKELY explanation for this observation?
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