Which one of the following species-species interactions is most likely to be mutually beneficial?
A. human and yeast
B. leaf-cutter ant and tropical plant
C. two plant species sharing the same resources
D. honeybee and apple flower
E. all of the above interactions are equally likely to be mutually beneficial.
Answer: D
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Divergent plate boundaries are located at:
1.trenches 2.transform faults 3.mid-ocean ridges 4.none of these
When calcium levels rise, the ____ secrete(s)
____, which ____ osteoclast activity. a. parathyroids; calcitonin; suppresses b. thyroid; calcitonin; suppresses c. thyroid; calcitonin; enhances d. thyroid; PTH; suppresses e. parathyroids; PTH; enhances
Which of the following are signs (not symptoms) of inflammation?
a. lymphodenitis b. granulomas c. abscesses d. soreness e. pain f. edema
Each of the following provides evidence that kinetochore microtubule shortening is directly involved in anaphase A chromosome movement to a pole except
A) Stabilization of microtubules with the drug paclitaxel stops chromosome movement to a pole. B) Treatment that accelerates microtubule depolymerization causes chromosomes to move toward the poles more quickly. C) Antibody inhibition of kinesin depolymerization of kinetochore microtubules interferes with chromosome movement to a pole. D) Laser bleaching of labeled kinetochore microtubules indicates they shorten at the kinetochore as the chromosome moves toward a pole. E) All of the above are evidence that kinetochore microtubule shortening is directly involved in anaphase A chromosome movement to a pole.