Coating a specimen with a heavy metal is a step in preparing it for (phase/fluorescent/electron) microscopy
What will be an ideal response?
electron
Biology & Microbiology
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In general, which is less harmful, a duplication or deletion? ____
Fill in the blank with the appropriate word.
Biology & Microbiology
A relationship in which one species lives better in the presence of another species that is unaffected is called ____
a. commensalism b. competitive exclusion c. mutualism d. predation e. parasitism
Biology & Microbiology
Secondary succession can occur ____
a. after a fire b. on a new sand dune c. on bare rock d. immediately after the formation of an artificial lake e. on a glacier
Biology & Microbiology
In some Greenland villages, nearly all recent newborns are female. Which range of PCB levels would you expect in those villages?
1.<1.0 µm/ml
2.1.0–1.9 µm/ml
3.2.0–4.0 µm/ml
4.>4.0 µm/ml