The Eustachian tube carries air from the middle ear to the
a. larynx.
b. inner ear.
c. pharynx.
d. oval window.
e. round window.
C
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Cytophaga columnaris causes columnaris (or "cottonmouth") disease in fish such as salmon. Based on the taxonomic group this species is a part of, predict some of the activities this bacterium has during infection of fish
Also mention a related taxon that likely has some of the same functions and another taxon that does not. What will be an ideal response?
Which of the following statements about magnetotaxis in the anaerobic bacteria Aquaspirilium is not correct?
A. Aquaspirilium swim using a flagellum toward magnetic north. B. Aquaspirilium can be attracted to the side of a dish using a bar magnet. C. Aquaspirilium contain bits of magnetized iron oxide used in sensing the earth's magnetic field. D. The earth's magnetic field is on a decline that guides Aquaspirilium deeper into the sediment. E. Anaerobic bacteria from New Zealand that swim toward magnetic south immediately reverse their attraction to magnetic north when moved to a northern environment.
The plots that were staked out on the island were part of the:
A. applied research. B. basic research. C. experimental design. D. constructed model.
Which statement about movement corridors is true?
A) Movement corridors can connect otherwise isolated habitat patches. B) Movement corridors can promote inbreeding in declining populations. C) Movement corridors are detrimental to species that migrate between habitats seasonally. D) Movement corridors can prevent the spread of disease.