marine microbes: Lecture Summary
What will be an ideal response?
1.Microorganisms are systemic throughout aquatic ecosystems (water column, aquatic animals) - revealed through metagenomics
2.Photosynthetic and non-photosynthetic microorganisms provide the base of the aquatic food chain
3.Extremophiles with different adaptations to temperature, oxygen, and pressure dominate the lower water column
4.Marine microbes are sensitive to global change
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A urine specimen obtained from a patient went to the microbiology lab for a bacterial culture and antibiotic sensitivity testing. The specimen sat out on the processing counter for a couple of hours before being cultured. Twenty fours hours later, the lab report goes into the computer---over 100,000 bacterial cells per milliliter of urine. Which statement is an accurate assessment of these results?
A. Urine samples have to be taken from the kidney in order to get a true bacterial count. B. Not all bacteria will grow on bacteriological media, so the total count is grossly underestimated. C. Urine is a sterile fluid as it leaves the body, so it is likely that the specimen was mishandled by the nursing staff when the sample was obtained. D. The bacterial count is not accurate since the culture sat without refrigeration.
What would form open channels that directly link the cytoplasms of adjacent cells?
a. gap junction b. adhering junction c. tight junction d. microvillus e. merocrine
Differentiate between structural, functional, and comparative genomics.
What will be an ideal response?
Protective features of the skin include all of the following except ________.
A. a keratinized surface B. high pH C. high salt content D. resident biota E. lysozyme